VariableNameCV Values

    

Used to populate the VariableName field in the Variables table

TermDefinition
1,1,1-Trichloroethane1,1,1-Trichloroethane (C2H3Cl3)
1,1,2,2-Tetrachloroethane1,1,2,2-Tetrachloroethane (C2H2Cl4)
1,1,2-Trichloroethane1,1,2-Trichloroethane (C2H3Cl3)
1,1-Dichloroethane1,1-Dichloroethane (C2H4Cl2)
1,1-Dichloroethene1,1-Dichloroethene (C2H2Cl2)
1,2,3-Trimethylbenzene1,2,3-Trimethylbenzene (C9H12)
1,2,4,5-tetrachlorobenzene1,2,4,5-tetrachlorobenzene (C6H2Cl4)
1,2,4-Trichlorobenzene1,2,4-Trichlorobenzene (C6H3Cl3)
1,2,4-Trimethylbenzene1,2,4-Trimethylbenzene
1,2-Dibromo-3-chloropropane1,2-Dibromo-3-chloropropane (C3H5Br2Cl)
1,2-Dichlorobenzene1,2-Dichlorobenzene (C6H4Cl2)
1,2-Dichloroethane1,2-Dichloroethane (C2H4Cl2)
1,2-Dichloropropane1,2-Dichloropropane (C3H6Cl2)
1,2-Dimethylnaphthalene1,2-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1,2-Dinitrobenzene1,2-Dinitrobenzene (C6H4N2O4)
1,2-Diphenylhydrazine1,2-Diphenylhydrazine (C12H12N2)
1,3,5-Trimethylbenzene1,3,5-Trimethylbenzene (C6H3(CH3)3)
1,3-Dichlorobenzene1,3-Dichlorobenzene (C6H4Cl2)
1,3-Dimethyladamantane1,3-Dimethyladamantane (C12H20).
1,3-Dimethylnaphthalene1,3-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1,3-Dinitrobenzene1,3-Dinitrobenzene (C6H4N2O4)
1,4,5,8-Tetramethylnaphthalene1,4,5,8-Tetramethylnaphthalene (C14H16), a polycyclic aromatic hydrocarbon (PAH)
1,4,5-Trimethylnaphthalene1,4,5-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1,4,6-Trimethylnaphthalene1,4,6-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1,4-Dichlorobenzene1,4-Dichlorobenzene (C6H4Cl2)
1,4-Dimethylnaphthalene1,4-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1,4-Dinitrobenzene1,4-Dinitrobenzene (C6H4N2O4)
1,5-Dimethylnaphthalene1,5-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1,6,7-Trimethylnaphthalene1,6,7-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
1,6-Dimethylnaphthalene1,6-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
1,8-Dimethylnaphthalene1,8-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
13b(H),17a(H)-20R-Diacholestane13b(H),17a(H)-20R-Diacholestane
13b(H),17a(H)-20S-Diacholestane13b(H),17a(H)-20S-Diacholestane
13b(H),17a(H)-20S-Methyldiacholestane13b(H),17a(H)-20S-Methyldiacholestane
14a(H),17a(H)-20R-Cholestane14a(H),17a(H)-20R-Cholestane
14a(H),17a(H)-20R-Ethylcholestane14a(H),17a(H)-20R-Ethylcholestane
14a(H),17a(H)-20R-methylcholestane14a(H),17a(H)-20R-methylcholestane
14a(H),17a(H)-20S-Cholestane14a(H),17a(H)-20S-Cholestane
14a(H),17a(H)-20S-Ethylcholestane14a(H),17a(H)-20S-Ethylcholestane
14a(H),17a(H)-20S-methylcholestane14a(H),17a(H)-20S-methylcholestane
14b(H),17b(H)-20R-Cholestane14b(H),17b(H)-20R-Cholestane
14b(H),17b(H)-20R-Ethylcholestane14b(H),17b(H)-20R-Ethylcholestane
14b(H),17b(H)-20R-Methylcholestane14b(H),17b(H)-20R-Methylcholestane
14b(H),17b(H)-20S-Cholestane14b(H),17b(H)-20S-Cholestane
14b(H),17b(H)-20S-Ethylcholestane14b(H),17b(H)-20S-Ethylcholestane
14b(H),17b(H)-20S-Methylcholestane14b(H),17b(H)-20S-Methylcholestane
17a(H),21b(H)-25-Norhopane17a(H),21b(H)-25-Norhopane
17a(H),21b(H)-28,30-Bisnorhopane17a(H),21b(H)-28,30-Bisnorhopane
17a(H),21b(H)-hopane17a(H),21b(H)-hopane
17a(H)-Diahopane17a(H)-Diahopane
17b(H),21a(H)-hopane (moretane)17b(H),21a(H)-hopane (moretane)
18a(H) and 18b(H)-Oleananes18a(H) and 18b(H)-Oleananes
18a(H),21b(H)-30-Norneohopane (C29Ts)18a(H),21b(H)-30-Norneohopane (C29Ts)
19-But-Fucoxanthin19-But-Fucoxanthin, a pigment
19-HexanoyloxyfucoxanthinThe phytoplankton pigment 19-Hexanoyloxyfucoxanthin
19-Hex-Fucoxanthin19-Hex-Fucoxanthin, a pigment
1-Chloronaphthalene1-Chloronaphthalene (C10H7Cl)
1-Ethylnaphthalene1-Ethylnaphthalene (C10H7C2H5), a polycyclic aromatic hydrocarbon (PAH)
1-Methylanthracene1-Methylanthracene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
1-Methyldibenzothiophene1-Methyldibenzothiophene (C13H10S)
1-Methylfluorene1-Methylfluorene (C14H12), a polycyclic aromatic hydrocarbon (PAH)
1-Methylnaphthalene1-Methylnaphthalene (C10H7CH3), a polycyclic aromatic hydrocarbon (PAH)
1-Methylphenanthrene1-Methylphenanthrene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
1-Naphthalenol methylcarbamate1-Naphthalenol methylcarbamate (C12H11NO2)
2,2-dichlorovinyl dimethyl phosphate2,2-dichlorovinyl dimethyl phosphate (C4H7Cl2O4P)
2,3,4,6-Tetrachlorophenol2,3,4,6-Tetrachlorophenol (C6H2Cl4O)
2,3,5-Trimethylnaphthalene2,3,5-Trimethylnaphthalene (C13H14), a polycyclic aromatic hydrocarbon (PAH)
2,3,6-Trimethylnaphthalene2,3,6-Trimethylnaphthalene (C10H5(CH3)3), a polycyclic aromatic hydrocarbon (PAH)
2,3-Dimethylnaphthalene2,3-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
2,4,5-Trichlorophenol2,4,5-Trichlorophenol (C6H3Cl3O)
2,4,6-Trichlorophenol2,4,6-Trichlorophenol (TCP) (C6H2Cl3OH)
2,4-Dichlorophenol2,4-Dichlorophenol (C6H4Cl2O)
2,4-Dimethylphenol2,4-Dimethylphenol (C8H10O)
2,4-Dinitrophenol2,4-Dinitrophenol (C6H4N2O5)
2,4-Dinitrotoluene2,4-Dinitrotoluene (C7H6N2O4)
2,6-Dichlorophenol2,6-Dichlorophenol (C6H4Cl2O)
2,6-Dinitrotoluene2,6-Dinitrotoluene (C7H6N2O4)
2,7-Dimethylnaphthalene2,7-Dimethylnaphthalene (C10H6(CH3)2), a polycyclic aromatic hydrocarbon (PAH)
2-Butanone (MEK)2-Butanone (MEK) (C4H8O)
2-Butoxyethanol2-Butoxyethanol (CH3(CH2)2CH2OCH2OH)
2-Chloronaphthalene2-Chloronaphthalene (C10H7Cl)
2-Chlorophenol2-Chlorophenol (C6H5ClO)
2-Hexanone2-Hexanone (C6H12O)
2-Methylanthracene2-Methylanthracene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
2-Methyldibenzothiophene2-Methyldibenzothiophene (C13H10S), a polycyclic aromatic hydrocarbon (PAH)
2-Methylnaphthalene2-Methylnaphthalene (C10H7CH3), a polycyclic aromatic hydrocarbon (PAH)
2-Methylphenanthrene2-Methylphenanthrene (C15H12), a polycyclic aromatic hydrocarbon (PAH)
2-Methylphenol2-Methylphenol (C7H8O)
2-Nitroaniline2-Nitroaniline (C6H6N2O2)
2-Nitrophenol2-Nitrophenol (C6H5NO3)
3,3-Dichlorobenzidine3,3-Dichlorobenzidine (C12H10Cl2N2)
3,6-Dimethylphenanthrene3,6-Dimethylphenanthrene (C16H14), a polycyclic aromatic hydrocarbon (PAH)
30,31,32,33,34-Pentakishomohopane-22R30,31,32,33,34-Pentakishomohopane-22R
30,31,32,33,34-Pentakishomohopane-22S30,31,32,33,34-Pentakishomohopane-22S
30,31,32,33-Tetrakishomohopane-22R30,31,32,33-Tetrakishomohopane-22R
30,31,32,33-Tetrakishomohopane-22S30,31,32,33-Tetrakishomohopane-22S
30,31,32-Trishomohopane-22R30,31,32-Trishomohopane-22R
30,31,32-Trishomohopane-22S30,31,32-Trishomohopane-22S
30,31-Bishomohopane-22R30,31-Bishomohopane-22R
30,31-Bishomohopane-22S30,31-Bishomohopane-22S
30-Homohopane-22R30-Homohopane-22R
30-Homohopane-22S30-Homohopane-22S
30-NorhopaneA series of hopanes with one less methyl group in the sidechain than the hopanes
30-Normoretane30-Normoretane, formula : C29H50
3-Nitroaniline3-Nitroaniline (C6H6N2O2)
4,4-DDDDichlorodiphenyldichloroethane (C14H10Cl4)
4,4-DDEDichlorodiphenyldichloroethylene (C14H8Cl4)
4,4-DDTDichlorodiphenyltrichloroethane (C14H9Cl5)
4,4-Methylenebis(2-chloroaniline)4,4'-Methylenebis(2-chloroaniline) (C13H12Cl2N2)
4,4-Methylenebis(N,N-dimethylaniline)4,4'-Methylenebis(N,N-dimethylaniline) (C17H22N2)
4,6-Dinitro-2-methylphenol4,6-Dinitro-2-methylphenol (C7H6N2O5)
4-Bromophenylphenyl ether4-Bromophenylphenyl ether (C12H9BrO)
4-Chloro-3-methylphenol4-Chloro-3-methylphenol (C7H7ClO)
4-Chloroaniline4-Chloroaniline (C6H6ClN)
4-Chlorophenylphenyl ether4-Chlorophenylphenyl ether (C12H9ClO)
4-Methylchrysene4-Methylchrysene (C19H14), a polycyclic aromatic hydrocarbon (PAH)
4-Methyldibenzothiophene4-Methyldibenzothiophene (C13H10S), a polycyclic aromatic hydrocarbon (PAH)
4-Methylphenol4-Methylphenol (C7H8O)
4-Nitroaniline4-Nitroaniline (C6H6N2O2)
4-Nitrophenol4-Nitrophenol (C6H5NO3)
9 cis-NeoxanthinThe phytoplankton pigment  9 cis-Neoxanthin
9,10-Dimethylanthracene9,10-Dimethylanthracene (C16H14), a polycyclic aromatic hydrocarbon (PAH)
AbsorbanceThe amount of radiation absorbed by a material
AbundanceThe relative representation of a species in a particular ecosystem. If this generic term is used, the publisher should specify/qualify the species, class, etc. being measured in the method, qualifier, or other appropriate field.
AcenaphtheneAcenaphthene (C12H10)
AcenaphthyleneAcenaphthylene (C12H8), a polycyclic aromatic hydrocarbon (PAH)
AcetateAcetate
Acetic AcidAcetic Acid (C2H4O2)
AcetoneAcetone (C3H6O)
AcetophenoneAcetophenone (C6H5C(O)CH3)
Acid neutralizing capacityAcid neutralizing capacity
Acidity, CO2 acidityCO2 acidity
Acidity, exchangeThe total amount of the Cation Exchange Capacity (CEC) of a soil that is due to H+ and Al3+ ions. It is a proportion of the total acidity and it is dependent on the type of soil and the percentage of the CEC that is composed of exchangeable bases (Ca2+, Mg2+, K+).
Acidity, hotHot Acidity
Acidity, mineral acidityMineral Acidity
Acidity, total acidityTotal acidity
AdamantaneAdamantane (C10H16)
Agency codeCode for the agency which analyzed the sample
AlbedoThe ratio of reflected to incident light.
AldrinAldrin (C12H8Cl6)
Alkalinity, bicarbonateBicarbonate Alkalinity
Alkalinity, carbonate Carbonate Alkalinity
Alkalinity, carbonate plus bicarbonateAlkalinity, carbonate plus bicarbonate
Alkalinity, hydroxide Hydroxide Alkalinity
Alkalinity, total Total Alkalinity
AlloxanthinThe phytoplankton pigment Alloxanthin
Aluminum, dissolvedDissolved Aluminum (Al)
Aluminum, particulateParticulate aluminum in suspension
Aluminum, totalAluminum (Al). Total indicates was measured on a whole water sample.
Ammonium fluxAmmonium (NH4) flux
AnilineAniline (C6H7N)
AnthraceneAnthracene (C14H10), a polycyclic aromatic hydrocarbon (PAH)
Antimony, dissolvedDissolved antimony (Sb)."Dissolved" indicates measurement was on a filtered sample.
Antimony, distribution coefficientRatio of concentrations of antimony in two phases in equilibrium with each other. Phases must be specified.
Antimony, particulateParticulate antimony (Sb) in suspension
Antimony, totalTotal antimony (Sb). "Total" indicates was measured on a whole water (unfiltered) sample.
AreaArea of a measurement location
ArgonArgon
Argon, dissolvedDissolved Argon
Aroclor-1016Aroclor-1016 (C24H13Cl7), a PCB mixture
Aroclor-1242Aroclor-1242 (C12H6Cl4), a PCB mixture
Aroclor-1254Aroclor-1254 (C12H5Cl5), a PCB mixture
Aroclor-1260Aroclor-1260 (C12H3Cl7), a PCB mixture
Arsenic, dissolvedDissolved Arsenic. For chemical terms, dissolved represents a filtered sample.
Arsenic, distribution coefficientRatio of concentrations of arsenic in two phases in equilibrium with each other. Phases must be specified.
Arsenic, particulateParticulate arsenic (As) in suspension
Arsenic, totalTotal arsenic (As). Total indicates was measured on a whole water sample.
Asteridae coverageAreal coverage of the plant Asteridae
Barium, dissolvedDissolved Barium (Ba)
Barium, distribution coefficientRatio of concentrations of barium in two phases in equilibrium with each other. Phases must be specified
Barium, particulateParticulate barium (Ba) in suspension
Barium, totalTotal Barium (Ba). For chemical terms, "total" indicates an unfiltered sample.
Barometric pressureBarometric pressure
BaseflowThe portion of streamflow (discharge) that is supplied by groundwater sources.
Batis maritima CoverageAreal coverage of the plant Batis maritima
Battery temperatureThe battery temperature of a datalogger or sensing system
Battery voltageThe battery voltage of a datalogger or sensing system, often recorded as an indicator of data reliability
BenthosBenthic species
Benz(a)anthraceneBenz(a)anthracene (C18H12), a polycyclic aromatic hydrocarbon (PAH)
BenzeneBenzene (C6H6)
Benzo(a)pyreneBenzo(a)pyrene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
Benzo(b)fluorantheneBenzo(b)fluoranthene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
Benzo(b)fluoreneBenzo(b)fluorene (C17H12), a polycyclic aromatic hydrocarbon (PAH)
Benzo(e)pyreneBenzo(e)pyrene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
Benzo(g,h,i)peryleneBenzo(g,h,i)perylene (C22H12), a polycyclic aromatic hydrocarbon (PAH)
Benzo(k)fluorantheneBenzo(k)fluoranthene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
Benzoic acidBenzoic acid (C7H6O2)
Benzyl alcoholBenzyl alcohol (C7H8O)
Beryllium, dissolvedDissolved Beryllium (Be) . For chemical terms, "dissolved"indicates a filtered sample.
Beryllium, totalTotal Beryllium (Be). For chemical terms, "total" indicates an unfiltered sample.
BicarbonateBicarbonate (HCO3-)
BifenthrinBifenthrin (C23H22ClF3O2)
Biogenic silicaHydrated silica (SiO2 nH20)
BiomassMass of living biological organisms in a given area or ecosystem at a given time. If this generic term is used, the publisher should specify/qualify the species, class, etc. being measured in the method, qualifier, or other appropriate field.
Biomass, phytoplanktonTotal mass of phytoplankton, per unit area or volume
Biomass, totalTotal biomass
BiphenylBiphenyl ((C6H5)2), a polycyclic aromatic hydrocarbon (PAH), also known as diphenyl or phenylbenzene or 1,1'-biphenyl or lemonene
Bis(2-chloroethoxy)methaneBis(2-chloroethoxy)methane (C5H10Cl2O2)
bis(2-Chloroethyl)etherbis(2-Chloroethyl)ether (C4H8Cl2O)
Bis-(2-ethylhexyl) phthalateBis-(2-ethylhexyl) phthalate (C6H4(C8H17COO)2)
bis-2-chloroisopropyl etherbis-2-chloroisopropyl ether (C6H12Cl2O)
Blue-green algae (cyanobacteria), phycocyaninBlue-green algae (cyanobacteria) with phycocyanin pigments
BOD11-day Biochemical Oxygen Demand
BOD2, carbonaceous2-day Carbonaceous Biochemical Oxygen Demand
BOD2020-day Biochemical Oxygen Demand
BOD20, carbonaceous20-day Carbonaceous Biochemical Oxygen Demand
BOD20, nitrogenous20-day Nitrogenous Biochemical Oxygen Demand
BOD3, carbonaceous3-day Carbonaceous Biochemical Oxygen Demand
BOD4, carbonaceous4-day Carbonaceous Biological Oxygen Demand
BOD55-day Biochemical Oxygen Demand
BOD5, carbonaceous5-day Carbonaceous Biochemical Oxygen Demand
BOD5, nitrogenous5-day Nitrogenous Biochemical Oxygen Demand
BOD6, carbonaceous6-day Carbonaceous Biological Oxygen Demand
BOD7, carbonaceous7-day Carbonaceous Biochemical Oxygen Demand
BODuUltimate Biochemical Oxygen Demand
BODu, carbonaceousCarbonaceous Ultimate Biochemical Oxygen Demand
BODu, nitrogenousNitrogenous Ultimate Biochemical Oxygen Demand
Body lengthLength of the body of an organism
Borehole log material classificationClassification of material encountered by a driller at various depths during the drilling of a well and recorded in the borehole log.
Boron, dissolveddissolved boron
Boron, totalTotal Boron (B)
Borrichia frutescens CoverageAreal coverage of the plant Borrichia frutescens
Bromide, dissolvedDissolved Bromide (Br-)
Bromide, totalTotal Bromide (Br-)
BromineBromine (Br2)
Bromine, dissolvedDissolved Bromine (Br2)
BromodichloromethaneBromodichloromethane (CHBrCl2)
BromoformBromoform (CHBr3), a haloform
Bromomethane (Methyl bromide)Bromomethane (Methyl bromide) (CH3Br)
Bulk densityThe mass of many particles of the material divided by the total volume they occupy. The total volume includes particle volume, inter-particle void volume and internal pore volume.
Bulk electrical conductivityBulk electrical conductivity of a medium measured using a sensor such as time domain reflectometry (TDR), as a raw sensor response in the measurement of a quantity like soil moisture.
ButaneButane
ButylbenzylphthalateButylbenzylphthalate (C19H20O4)
Butyric AcidButyric Acid (C4H8O2)
C1-ChrysenesA group of alkyl chrysene compounds which all have one carbon group (that is, one methyl group) attached
C1-DibenzothiophenesA group of alkyl dibenzothiophene compounds which all have one carbon group (that is, one methyl group) attached
C1-Fluoranthenes/PyrenesA group of alkyl fluoranthene and pyrene compounds which all have one carbon group (that is, one methyl group) attached
C1-FluoreneA group of alkyl fluorene compounds which all have one carbon group (that is, one methyl group) attached
C1-NaphthaleneA group of alkyl naphthalene compounds which all have one carbon group (that is, one methyl group) attached
C1-Phenanthrene/AnthraceneA group of alkyl phenanthrene and anthracene compounds which all have one carbon group (that is, one methyl group) attached
C23 Tricyclic TerpaneC23 Tricyclic Terpane
C24 Tetracyclic TerpaneC24 Tetracyclic Terpane
C24 Tricyclic TerpaneC24 Tricyclic Terpane
C25 Tricyclic TerpaneC25 Tricyclic Terpane
C26 Tricyclic Terpane-22RC26 Tricyclic Terpane-22R
C26 Tricyclic Terpane-22SC26 Tricyclic Terpane-22S
C28 Tricyclic Terpane-22RC28 Tricyclic Terpane-22R
C28 Tricyclic Terpane-22SC28 Tricyclic Terpane-22S
C29 Tricyclic Terpane-22RC29 Tricyclic Terpane-22R
C29 Tricyclic Terpane-22SC29 Tricyclic Terpane-22S
C2-ChrysenesA group of alkyl chrysene compounds which all have two carbon groups (that is, dimethyl or ethyl group) attached
C2-DibenzothiophenesA group of alkyl dibenzothiophene compounds which all have two carbon groups (that is, dimethyl or ethyl group) attached
C2-Fluoranthenes/PyrenesA group of alkyl fluoranthene and pyrene compounds which all have two carbon groups attached
C2-FluoreneA a group of alkyl fluorene compounds which all have two carbon groups (that is, dimethyl or ethyl group) attached
C2-NaphthaleneA group of alkyl naphthalene compounds which all have two carbon groups (that is, dimethyl or ethyl group) attached
C2-Phenanthrene/AnthraceneA group of alkyl phenanthrene and anthracene compounds which all have two carbon groups (that is, a dimethyl or ethyl group) attached
C3-ChrysenesA group of alkyl chrysene compounds which all have three carbon groups (that is, trimethyl, methylethyl, or propyl group) attached
C3-DibenzothiophenesA group of alkyl dibenzothiophene compounds which all have three carbon groups (that is, trimethyl, methylethyl, or propyl group) attached
C3-Fluoranthenes/PyrenesA group of alkyl fluoranthene and pyrene compounds which all have three carbon groups attached
C3-FluoreneA group of alkyl fluorene compounds which all have three carbon groups (that is, trimethyl, methylethyl, or propyl group) attached
C3-NaphthaleneA group of alkyl naphthalene compounds which all have three carbon groups (that is, trimethyl, methylethyl, or propyl group) attached
C3-Phenanthrene/AnthraceneA group of alkyl phenanthrene and anthracene compounds which all have three carbon groups (that is, a trimethyl, methylethyl, or propyl group) attached
C4-ChrysenesA group of alkyl chrysene compounds which all have four carbon groups (that is, tetramethyl, butyl, methylpropyl, or diethyl group) attached
C4-DibenzothiophenesA group of alkyl dibenzothiophene compounds which all have four carbon groups attached
C4-NaphthaleneA group of alkyl naphthalene compounds which all have four carbon groups (that is, tetramethyl, butyl, methylpropyl, or diethyl group) attached
C4-Phenanthrene/AnthraceneA group of alkyl phenanthrene and anthracene compounds which all have four carbon groups (that is, a tetramethyl, diethyl, or methylpropyl group) attached
Cadmium, dissolvedDissolved Cadmium. For chemical terms, "dissolved" indicates a filtered sample.
Cadmium, distribution coefficientRatio of concentrations of cadmium in two phases in equilibrium with each other. Phases must be specified.
Cadmium, particulateParticulate cadmium (Cd) in suspension
Cadmium, totalTotal Cadmium (Cd). For chemical terms, "total" indciates an unfiltered sample.
Calcium, dissolvedDissolved Calcium (Ca)
Calcium, totalTotal Calcium (Ca)
CanthaxanthinThe phytoplankton pigment Canthaxanthin
CarbarylCarbaryl (C12H11NO2)
CarbazoleCarbazole (C12H9N)
Carbon dioxideCarbon dioxide
Carbon dioxide fluxCarbon dioxide (CO2) flux
Carbon dioxide storage fluxCarbon dioxide (CO2) storage flux
Carbon Dioxide, dissolvedDissolved Carbon dioxide (CO2)
Carbon dioxide, transducer signalCarbon dioxide (CO2), raw data from sensor
Carbon disulfideCarbon disulfide (CS2)
Carbon monoxide, dissolvedDissolved carbon monoxide (CO)
Carbon tetrachlorideCarbon tetrachloride (CCl4)
Carbon to nitrogen mass ratioCarbon to nitrogen (C:N) mass ratio
Carbon to nitrogen molar ratioCarbon to nitrogen (C:N) molar ratio
Carbon, dissolved inorganicDissolved Inorganic Carbon
Carbon, dissolved organicDissolved Organic Carbon
Carbon, dissolved totalDissolved Total (Organic+Inorganic) Carbon
Carbon, particulate organicParticulate organic carbon in suspension
Carbon, suspended inorganicSuspended Inorganic Carbon
Carbon, suspended organicDEPRECATED -- The use of this term is discouraged in favor of the use of the synonymous term "Carbon, particulate organic".
Carbon, suspended totalSuspended Total (Organic+Inorganic) Carbon
Carbon, totalTotal (Dissolved+Particulate) Carbon
Carbon, total inorganicTotal (Dissolved+Particulate) Inorganic Carbon
Carbon, total organicTotal (Dissolved+Particulate) Organic Carbon
Carbon, total solid phaseTotal solid phase carbon
Carbon-13, stable isotope ratio deltaDifference in the 13C:12C ratio between the sample and standard (del C 13)
Carbon-14A radioactive isotope of carbon which undergoes beta decay
CarbonateCarbonate ion (CO3-2) concentration
Cesium, dissolvedDissolved Cesium (Cs)
Cesium, totalTotal Cesium (Cs)
Cesium-137A radioactive isotope of cesium which is formed as a fission product by nuclear fission of uranium or plutonium.
ChlorideChloride (Cl-)
Chloride, dissolvedDissolved Chloride (Cl-)
Chloride, totalTotal Chloride (Cl-)
ChlorineChlorine (Cl2)
Chlorine, dissolvedDissolved Chlorine (Cl2)
ChlorobenzeneChlorobenzene (C6H5Cl)
ChlorobenzilateChlorobenzilate (C16H14Cl2O3)
ChloroethaneChloroethane (C2H5Cl)
ChloroetheneChloroethene (C2H3Cl)
ChloroformChloroform (CHCl3), a haloform
ChloromethaneChloromethane (CH3Cl)
Chlorophyll (a+b+c)Chlorophyll (a+b+c)
Chlorophyll aChlorophyll a
Chlorophyll a allomerThe phytoplankton pigment Chlorophyll a allomer
Chlorophyll a plus pheopigmentSum of chlorophyll a and phaeopigments
Chlorophyll a to pheopigment ratioRatio of chlorophyll a to pheopigment
Chlorophyll a, corrected for pheophytinChlorphyll a corrected for pheophytin
Chlorophyll a, uncorrected for pheophytinChlorophyll a uncorrected for pheophytin
Chlorophyll bChlorophyll b
Chlorophyll cChlorophyll c
Chlorophyll c1 and c2Chlorophyll c1 and c2
Chlorophyll c2Chlorophyll c2, a form of chlorophyll
Chlorophyll fluorescenceChlorophyll Fluorescence
Chromium (III)Trivalent Chromium
Chromium (VI)Hexavalent Chromium
Chromium (VI), dissolvedDissolved Hexavalent Chromium
Chromium, dissolvedDissolved Chromium
Chromium, distribution coefficientRatio of concentrations of chromium in two phases in equilibrium with each other. Phases must be specified.
Chromium, particulateParticulate chromium (Cr) in suspension
Chromium, totalTotal chromium (Cr). Total indicates was measured on a whole water (unfiltered) sample.
ChryseneChrysene (C18H12), a polycyclic aromatic hydrocarbon (PAH)
cis-1,2-Dichloroethenecis-1,2-Dichloroethene (C2H2Cl2)
cis-1,3-Dichloropropenecis-1,3-Dichloropropene (C3H4Cl2)
Clay, totalTotal clay
Cobalt, dissolvedDissolved Cobalt (Co)
Cobalt, totalTotal Cobalt (Co)
Cobalt-60A synthetic radioactive isotope of cobalt with a half-life of 5.27 years.
CODChemical oxygen demand
Coliform, fecalFecal Coliform
Coliform, totalTotal Coliform
ColorColor in quantified in color units
Colored dissolved organic matterThe concentration of colored dissolved organic matter (humic substances)
Container numberThe identifying number for a water sampler container.
Copper, dissolvedDissolved Copper (Cu)
Copper, distribution coefficientRatio of concentrations of copper in two phases in equilibrium with each other. Phases must be specified.
Copper, particulateParticulate copper (Cu) in suspension
Copper, totalTotal copper (Cu). "Total" indicates was measured on a whole water (unfiltered) sample.
CounterThe total number of events within the measurement period
CryptophytesThe chlorophyll a concentration contributed by cryptophytes
Cuscuta spp. coverageAreal coverage of the plant Cuscuta spp.
CyanideCyanide (CN)
CyclohexaneCyclohexane (C6H6Cl6)
Cytochrome P450, family 1, subfamily A, polypeptide 1, delta cycle thresholdDelta cycle threshold for Cytochrome P450, family 1, subfamily A, polypeptide 1 (cyp1a1). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for cyp1a1 is the difference between the cycle threshold (Ct) of cyp1a1 gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
Cytosolic proteinThe total protein concentration within the cytosolic fraction of cells. The cytosol refers to the intracellular fluid or cytoplasmic matrix of a eukaryotic cell.
Data shuttle attachedA categorical variable marking the attachment of a coupler or data shuttle to a logger. This is used for quality control.
Data shuttle detachedA categorical variable marking the detatchment of a coupler or data shuttle to a logger. This is used for quality control.
delta-13C of C2H6Isotope 13C of ethane
delta-13C of C3H8Isotope 13C of propane
delta-13C of C4H10Isotope 13C of butane
delta-13C of CH4Isotope 13C of methane
delta-13C of CO2Isotope 13C of carbon dioxide
delta-13C of DICIsotope 13C of dissolved inorganic carbon (DIC)
delta-13C of DOCIsotope 13C of dissolved organic carbon (DOC)
delta-13C of POCIsotope 13C of particulate organic carbon (POC)
delta-14C of DICIsotope 14C of dissolved inorganic carbon (DIC)
delta-14C of DOCIsotope 14C of dissolved organic carbon (DOC)
delta-14C of POCIsotope 14C of particulate organic carbon (POC)
delta-15N of PNIsotope 15N of particulate nitrogen (PN)
delta-18O of H2OIsotope 18O of water
delta-D of CH4hydrogen isotopes of methane
delta-D of H2Ohydrogen isotopes of water
DensityDensity
DeuteriumDeuterium (2H), Delta D
DiadinoxanthinThe phytoplankton pigment Diadinoxanthin
Diallate (cis or trans)Diallate (cis or trans) (C10H17Cl2NOS)
DiatoxanthinThe phytoplankton pigment Diatoxanthin
Dibenz(a,h)anthraceneDibenz(a,h)anthracene (C22H14), a polycyclic aromatic hydrocarbon (PAH)
DibenzofuranDibenzofuran (C12H8O)
DibenzothiopheneDibenzothiophene (C12H8S), a polycyclic aromatic hydrocarbon (PAH)
DibromochloromethaneDibromochloromethane (CHBr2Cl)
DieldrinDieldrin (C12H8Cl6O)
Diethyl phthalateDiethyl phthalate (C12H14O4)
Diethylene glycolDiethylene glycol (C4H10O3)
Diisopropyl EtherDiisopropyl Ether (C6H14O)
Dimethyl PhthalateDimethyl Phthalate (C10H10O4)
DimethylphenanthreneDimethylphenanthrene (C16H14)
Di-n-butylphthalateDi-n-butylphthalate (C16H22O4)
Di-n-octyl phthalateDi-n-octyl phthalate (C24H38O4)
DinoflagellatesThe chlorophyll a concentration contributed by Dinoflagellates
DinosebDinoseb (C10H12N2O5)
DischargeDischarge
DistanceDistance measured from a sensor to a target object such as the surface of a water body or snow surface.
Distichlis spicata CoverageAreal coverage of the plant Distichlis spicata
DisulfotonDisulfoton (C8H19O2PS3)
d-Limonened-Limonene (C10H16)
DNA damage, olive tail momentIn a single cell gel electrophoresis assay (comet assay), olive tail moment is the product of the percentage of DNA in the tail and the distance between the intesity centroids of the head and tail along the x-axis (Olive, et al., 1990)
DNA damage, percent tail DNAIn a single cell gel electrophoresis assay (comet assay), percent tail DNA is the ratio of fluorescent intensity of the tail over the total fluorescent intensity of the head (nuclear core) and tail multiplied by 100.
DNA damage, tail lengthIn a single cell gel electrophoresis assay (comet assay), tail length is the distance of DNA migration from the body of the nuclear core
E-coliEscherichia coli
Electric CurrentA flow of electric charge
Electric EnergyElectric Energy
Electric PowerElectric Power
Electrical conductivityElectrical conductivity
End of fileA categorical variable marking the end of a data file. This is used for quality control.
Endosulfan I (alpha)Endosulfan I (alpha) (C9H6Cl6O3S)
Endosulfan II (beta)Endosulfan II (beta) (C9H6Cl6O3S)
Endosulfan SulfateEndosulfan Sulfate (C9H6Cl6O4S)
EndrinEndrin (C12H8Cl6O)
Endrin aldehydeEndrin aldehyde (C12H8Cl6O)
Endrin KetoneEndrin Ketone (C12H9Cl5O)
EnterococciEnterococcal bacteria
EthaneEthane
Ethane, dissolvedDissolved Ethane (C2H6)
EthanolEthanol (C2H6O)
Ethoxyresorufin O-deethylase, activityEthoxyresorufin O-deethylase (EROD) activity
Ethyl tert-Butyl EtherEthyl tert-Butyl Ether (C6H14O)
EthylbenzeneEthylbenzene (C8H10)
EthyleneEthylene (C2H4)
Ethylene glycolEthlene Glycol (C2H4(OH)2)
Ethylene, dissolvedDissolved ethylene
EthyneEthyne (C2H2)
EvaporationEvaporation
EvapotranspirationEvapotranspiration
Evapotranspiration, potentialThe amount of water that could be evaporated and transpired if there was sufficient water available.
Fish detectionsThe number of fish identified by the detection equipment
Flash memory error countA counter which counts the number of  datalogger flash memory errors
FluorantheneFluoranthene (C16H10), a polycyclic aromatic hydrocarbon (PAH)
FluoreneFluorene (C13H10), a polycyclic aromatic hydrocarbon (PAH)
FluorideFluoride (F-)
Fluoride, dissolvedDissolved Fluoride (F-)
FluorineFluorine (F2)
Fluorine, dissolvedDissolved Fluorine (F2)
FormateFormate
Formic acidFormic acid (CH2O2)
Frequency of RotationNumber of rotations within a time period
Friction velocityFriction velocity
FucoxanthinA xanthophyll, with formula C42H58O6
Gage heightWater level with regard to an arbitrary gage datum (also see Water depth for comparison)
Global RadiationSolar radiation, direct and diffuse, received from a solid angle of 2p steradians on a horizontal surface. Source: World Meteorological Organization, Meteoterm
GlutaraldehydeGlutaraldehyde (C5H8O2)
Glutathione S-transferase, activityGlutathione S-transferase (GST) activity
Glutathione S-transferase, delta cycle thresholdDelta cycle threshold for glutathione S-transferase (gst). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for gst is the difference between the cycle threshold (Ct) of gst gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
Gravel, totalTotal gravel
Gross alpha radionuclidesGross Alpha Radionuclides
Gross beta radionuclidesGross Beta Radionuclides
Ground heat fluxGround heat flux
Groundwater DepthGroundwater depth is the distance between the water surface and the ground surface at a specific location specified by the site location and offset.
Hardness, CalciumHardness of calcium
Hardness, carbonateCarbonate hardness also known as temporary hardness
Hardness, MagnesiumHardness of magnesium
Hardness, non-carbonateNon-carbonate hardness
Hardness, totalTotal hardness
Heat indexThe combination effect of heat and humidity on the temperature felt by people.
height, above sea floorVertical distance from the sea floor to a point.
HeliumHelium
Helium, dissolvedDissolved Helium (He)
HeptachlorHeptachlor (C10H5Cl7)
Heptachlor epoxideHeptachlor epoxide (C10H5Cl7O)
HexachlorobenzeneHexachlorobenzene (C6Cl6)
HexachlorobutadieneHexachlorobutadiene (C4Cl6)
HexachlorocyclopentadieneHexachlorocyclopentadiene (C5Cl6)
HexachloroethaneHexachloroethane (C2Cl6)
HexaneHexane
Host connectedA categorical variable marking the attachment of a host computer to a logger. This is used for quality control.
HydrogenHydrogen
Hydrogen sulfideHydrogen sulfide (H2S)
Hydrogen, dissolvedDissolved Hydrogen
Hydrogen-2, stable isotope ratio deltaDifference in the 2H:1H ratio between the sample and standard
Imaginary dielectric constantSoil reponse of a reflected standing electromagnetic wave of a particular frequency which is related to the dissipation (or loss) of energy within the medium. This is the imaginary portion of the complex dielectric constant.
Indeno(1,2,3-cd)pyreneIndeno(1,2,3-cd)pyrene (C22H12)
IndicatorBinary status to indicate the status of an instrument or other piece of equipment.
Instrument status codeCode value recorded by instrument indicating some information regarding the status of the instrument
InterceptThe point at which one of the variables in a function equals 0.
Iodide, dissolvedDissolved Iodide (I-)
Iron sulfideIron sulfide (FeS2)
Iron, dissolvedDissolved Iron (Fe)
Iron, ferricFerric Iron (Fe+3)
Iron, ferrousFerrous Iron (Fe+2)
Iron, particulateParticulate iron (Fe) in suspension
Iron, totalTotal Iron (Fe)
IsobutaneIsobutane
Isobutyric acidIsobutyric acid (C4H8O2)
IsopentaneIsopentane
IsophoroneIsophorone (C9H14O)
Isoprenoid RRT 1380Isoprenoid RRT 1380
Isoprenoid RRT 1470Isoprenoid RRT 1470
Isopropyl alcoholIsopropyl alcohol (C3H8O)
IsopropylbenzeneIsopropylbenzene (C9H12)
Iva frutescens coverageAreal coverage of the plant Iva frutescens
Lactic AcidLactic Acid (C3H6O3)
Latent heat fluxLatent Heat Flux
LatitudeLatitude as a variable measurement or observation (Spatial reference to be designated in methods).  This is distinct from the latitude of a site which is a site attribute.
Lead, dissolvedDissolved Lead (Pb). For chemical terms, dissolved indicates a filtered sample
Lead, distribution coefficientRatio of concentrations of lead in two phases in equilibrium with each other. Phases must be specified.
Lead, particulateParticulate lead (Pb) in suspension
Lead, totalTotal Lead (Pb). For chemical terms, total indicates an unfiltered sample.
Lead-210A naturally-occurring radioisotope of lead with a half-life of 22.20 years.
Leaf wetnessThe effect of moisture settling on the surface of a leaf as a result of either condensation or rainfall.
Light attenuation coefficientLight attenuation coefficient
Limonium nashii CoverageAreal coverage of the plant Limonium nashii
Lipid contentLipid content
Lithium, dissolvedDissolved Lithium (Li). For chemical terms, dissolved indicates a filtered sample.
Lithium, totalTotal Lithium (Li). For chemical terms, total indicates an unfiltered sample.
Liver, massMass of the sample of liver tissue used for analyses
Logger stoppedA categorical variable indicating that a logger was told to stop recording data. This is used for quality control.
LongitudeLongitude as a variable measurement or observation (Spatial reference to be designated in methods). This is distinct from the longitude of a site which is a site attribute.
Low battery countA counter of the number of times the battery voltage dropped below a minimum threshold
LSILangelier Saturation Index is an indicator of the degree of saturation of water with respect to calcium carbonate
Luminous FluxA measure of the total amount of visible light present
Lycium carolinianum CoverageAreal coverage of the plant Lycium carolinianum
Magnesium, dissolvedDissolved Magnesium (Mg)
Magnesium, totalTotal Magnesium (Mg)
MalathionButanedioic acid, [(dimethoxyphosphinothioyl)thio]-, diethyl ester (C10H19O6PS2)
Manganese, dissolvedDissolved Manganese (Mn)
Manganese, particulateParticulate manganese (Mn) in suspension
Manganese, totalTotal manganese (Mn). "Total" indicates was measured on a whole water (unfiltered) sample.
Mercury, dissolvedDissolved Mercury (Hg). For chemical terms, dissolved indicates a filtered sample.
Mercury, totalTotal Mercury (Hg). For chemical terms, total represents an unfiltered sample.
MethaneMethane (CH4)
Methane, dissolvedDissolved Methane (CH4)
MethanolMethanol (CH3OH)
MethoxychlorMethoxychlor (C16H15Cl3O2)
Methyl tert-butyl ether (MTBE)Methyl tert-butyl ether (MTBE) (C5H12O)
MethylchryseneMethylchrysene (C19H14)
Methylene blue active substancesMethylene Blue Active Substances (MBAS)
Methylene chloride (Dichloromethane)Methylene chloride (Dichloromethane) (CH2Cl2)
MethylfluorantheneMethylfluoranthene (C17H12)
MethylfluoreneMethylfluorene (C14H12)
MethylmercuryMethylmercury (CH3Hg)
MethylpyreneMethylpyrene (C17H12)
MevinphosMevinphos (C7H13O6P)
Microsomal proteinThe total protein concentration within the microsomal fraction of cells. Microsomes refer to vesicle-like artifacts reformed from pieces of endoplasmic reticulum when eukaryotic cells are broken up in a laboratory.
Molbydenum, dissolvedDissolved Molbydenum (Mo). For chemical terms, dissolved indicates a filtered sample.
Molybdenum, totaltotal Molybdenum (Mo). For chemical terms, total represents an unfiltered sample.
Momentum fluxMomentum flux
Monanthochloe littoralis CoverageAreal coverage of the plant Monanthochloe littoralis
N, albuminoidAlbuminoid Nitrogen
n-alkane, C10C10 alkane, normal (i.e. straight-chain) isomer, common name: n-Decane, formula : C10H22
n-alkane, C11C11 alkane, normal (i.e. straight-chain) isomer, common name: n-Undecane, formula : CH3(CH2)9CH3
n-alkane, C12C12 alkane, normal (i.e. straight-chain) isomer, common name: n-Dodecane, formula : C12H26
n-alkane, C13C13 alkane, normal (i.e. straight-chain) isomer, common name: n-Tridecane, formula : C13H28
n-alkane, C14C14 alkane, normal (i.e. straight-chain) isomer, common name: n-Tetradecane, formula : C14H30
n-alkane, C15C15 alkane, normal (i.e. straight-chain) isomer, common name: n-Pentadecane, formula : C15H32
n-alkane, C16C16 alkane, normal (i.e. straight-chain) isomer, common name: n-Hexadecane, formula: C16H34. Synonym: cetane
n-alkane, C17C17 alkane, normal (i.e. straight-chain) isomer, common name: n-Heptadecane, formula : C17H36
n-alkane, C18C18 alkane, normal (i.e. straight-chain) isomer, common name: n-Octadecane, formula : C18H38
n-alkane, C19C19 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonadecane, formula : C19H40
n-alkane, C20C20 alkane, normal (i.e. straight-chain) isomer, common name: n-Icosane, formula : C20H42. Synonyms: didecyl, eicosane.
n-alkane, C21C21 alkane, normal (i.e. straight-chain) isomer, common name: n-Henicosane, formula : C21H44.
n-alkane, C22C22 alkane, normal (i.e. straight-chain) isomer, common name: n-Docosane, formula : C22H46
n-alkane, C23C23 alkane, normal (i.e. straight-chain) isomer, common name: n-Tricosane, formula : C23H48
n-alkane, C24C24 alkane, normal (i.e. straight-chain) isomer, common name: n-Tetracosane, formula : C24H50
n-alkane, C25C25 alkane, normal (i.e. straight-chain) isomer, common name: n-Pentacosane, formula : C25H52
n-alkane, C26C26 alkane, normal (i.e. straight-chain) isomer, common name: n-Hexacosane, formula : C26H54, synonyms: cerane, hexeikosane
n-alkane, C27C27 alkane, normal (i.e. straight-chain) isomer, common name: n-Heptacosane, formula : C27H56
n-alkane, C28C28 alkane, normal (i.e. straight-chain) isomer, common name: n-Octacosane, formula : C28H58
n-alkane, C29C29 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonacosane, formula : C29H60
n-alkane, C30C30 alkane, normal (i.e. straight-chain) isomer, common name: n-Triacontane, formula : C30H62
n-alkane, C31C31 alkane,normal (i.e. straight-chain) isomer, common name: n-Hentriacontane, formula : C31H64, Synonym: untriacontane
n-alkane, C32C32 alkane, normal (i.e. straight-chain) isomer, common name: n-Dotriacontane, formula : C32H66, Synonym: dicetyl
n-alkane, C33C33 alkane, (i.e. straight-chain) isomer, common name: n-Tritriacontane, formula : C33H68
n-alkane, C34C34 alkane, normal (i.e. straight-chain) isomer, common name: n-Tetratriacontane, formula : n-alkane, C34H70
n-alkane, C35C35 alkane, normal (i.e. straight-chain) isomer, common name: n-Pentatriacontane, formula : n-alkane, C35H72
n-alkane, C36C36 alkane, normal (i.e. straight-chain) isomer, common name: n-Hexatriacontane, formula : n-alkane, C36H74
n-alkane, C37C37 alkane, normal (i.e. straight-chain) isomer, common name: n-Heptatriacontane, formula : n-alkane, C37H76
n-alkane, C38C38 alkane, normal (i.e. straight-chain) isomer, common name: n-Octatriacontane, formula : n-alkane, C38H78
n-alkane, C39C39 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonatriacontane, formula : n-alkane, C39H80
n-alkane, C40C40 alkane, normal (i.e. straight-chain) isomer, common name: n-Tetracontane, formula : n-alkane, C40H82
n-alkane, C9C9 alkane, normal (i.e. straight-chain) isomer, common name: n-Nonane, formula : C9H20
n-alkane, long-chainlong-chain alkanes, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
n-alkane, short-chainshort-chain alkanes, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
n-alkane, totalTotal alkane, normal (i.e. straight chain) isomer (isomer range of alkanes measured should be specified)
NaphthaleneNaphthalene (C10H8)
NDVINormalized difference vegetation index
Net heat fluxOutgoing rate of heat energy transfer minus the incoming rate of heat energy transfer through a given area
Nickel, dissolvedDissolved Nickel (Ni)
Nickel, distribution coefficientRatio of concentrations of nickel in two phases in equilibrium with each other. Phases must be specified.
Nickel, particulateParticulate nickel (Ni) in suspension
Nickel, totalTotal Nickel (Ni). "Total" indicates was measured on a whole water (unfiltered) sample.
NitrobenzeneNitrobenzene (C6H5NO2)
Nitrogen, dissolved (free+ionized) Ammonia (NH3) + (NH4)Dissolved (free+ionized) Ammonia
Nitrogen, dissolved inorganicDissolved inorganic nitrogen
Nitrogen, dissolved KjeldahlDissolved Kjeldahl (organic nitrogen + ammonia (NH3) + ammonium (NH4))nitrogen
Nitrogen, dissolved nitrate (NO3)Dissolved nitrate (NO3) nitrogen
Nitrogen, dissolved nitrite (NO2)Dissolved nitrite (NO2) nitrogen
Nitrogen, dissolved nitrite (NO2) + nitrate (NO3)Dissolved nitrite (NO2) + nitrate (NO3) nitrogen
Nitrogen, dissolved organicDissolved Organic Nitrogen
Nitrogen, gasGaseous Nitrogen (N2)
Nitrogen, inorganicTotal Inorganic Nitrogen
Nitrogen, NH3Free Ammonia (NH3)
Nitrogen, NH3 + NH4Total (free+ionized) Ammonia
Nitrogen, NH4Ammonium (NH4)
Nitrogen, nitrate (NO3)Nitrate (NO3) Nitrogen
Nitrogen, nitrite (NO2)Nitrite (NO2) Nitrogen
Nitrogen, nitrite (NO2) + nitrate (NO3)Nitrite (NO2) + Nitrate (NO3) Nitrogen
Nitrogen, organicOrganic Nitrogen
Nitrogen, organic kjeldahlOrganic Kjeldahl (organic nitrogen + ammonia (NH3) + ammonium (NH4)) nitrogen
Nitrogen, particulateParticulate nitrogen (N) in suspension
Nitrogen, particulate organicParticulate Organic Nitrogen
Nitrogen, totalTotal Nitrogen (NO3+NO2+NH4+NH3+Organic)
Nitrogen, total dissolvedTotal dissolved nitrogen
Nitrogen, total kjeldahlTotal Kjeldahl Nitrogen (Ammonia+Organic)
Nitrogen, total nitriteTotal nitrite (NO2)
Nitrogen, total organicTotal (dissolved + particulate) organic nitrogen
Nitrogen-1515 Nitrogen, Delta Nitrogen
Nitrogen-15, stable isotope ratio deltaDifference in the 15N:14N ratio between the sample and standard (del N 15)
Nitrous oxideNitrous oxide (N2O)
N-NitrosodiethylamineN-Nitrosodiethylamine (C4H10N2O)
N-NitrosodimethylamineN-Nitrosodimethylamine (C2H6N2O)
N-Nitrosodi-n-butylamineN-Nitrosodi-n-butylamine (C8H18N2O)
N-Nitrosodi-n-propylamineN-Nitrosodi-n-propylamine (C6H14N2O)
N-NitrosodiphenylamineN-Nitrosodiphenylamine (C12H10N2O)
N-NitrosomethylethylamineN-Nitrosomethylethylamine (C3H8N2O)
No vegetation coverageAreal coverage of no vegetation
Norpristane (1650)Norpristane (1650)
OdorOdor
OffsetConstant to be added as an offset to a variable of interest.
Oil and greaseOil and grease
Organic matterThe organic matter component of a complex material.
OrientationAzimuth orientation of sensor platform
Osmotic pressureOsmotic pressure
OxygenOxygen
Oxygen fluxOxygen (O2) flux
Oxygen uptakeConsumption of oxygen by biological and/or chemical processes
Oxygen, dissolvedDissolved oxygen
Oxygen, dissolved percent of saturationDissolved oxygen, percent saturation
Oxygen, dissolved, transducer signalDissolved oxygen, raw data from sensor
Oxygen-1818 O, Delta O
Oxygen-18, stable isotope ratio deltaDifference in the 18O:16O ratio between the sample and standard
o-Xyleneo-Xylene (C8H10)
OzoneOzone (O3)
ParameterParameter related to a hydrologic process. An example usage would be for a starge-discharge relation parameter.
Parathion-ethylParathion-ethyl (C10H14NO5PS)
PentachlorobenzenePentachlorobenzene (C6HCl5)
PentachlorophenolPentachlorophenol (C6HCl5O)
PentanePentane
Percent full scaleThe percent of full scale for an instrument
PeridininThe phytoplankton pigment Peridinin
PermethrinPermethrin (C21H20Cl2O3)
PermittivityPermittivity is a physical quantity that describes how an electric field affects, and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Thus, permittivity relates to a material's ability to transmit (or "permit") an electric field.
PerylenePerylene (C20H12), a polycyclic aromatic hydrocarbon (PAH)
Petroleum hydrocarbon, totalTotal petroleum hydrocarbon
pHpH is the measure of the acidity or alkalinity of a solution. pH is formally a measure of the activity of dissolved hydrogen ions (H+). Solutions in which the concentration of H+ exceeds that of OH- have a pH value lower than 7.0 and are known as acids.
PhenanthrenePhenanthrene (C14H10), a polycyclic aromatic hydrocarbon (PAH)
PhenolPhenol (C6H5OH)
Phenolics, totalTotal Phenolics
Pheophorbide aPheophorbide a is a degradation product of Chlorophyll, C35H36N4O5
PheophytinPheophytin (Chlorophyll which has lost the central Mg ion) is a degradation product of Chlorophyll
Pheopigment, totalTotal pheopigments, a non-photosynthetic degradation product of algal chlorophyll pigments
PhoratePhorate (C7H17O2PS3)
Phosphorodithioic acidPhosphorodithioic acid (C10N12N3O3PS2)
Phosphorus, dissolvedDissolved Phosphorus (P)
Phosphorus, dissolved organicDissolved organic phosphorus
Phosphorus, inorganic Inorganic Phosphorus
Phosphorus, organicOrganic Phosphorus
Phosphorus, orthophosphateOrthophosphate Phosphorus
Phosphorus, orthophosphate dissolvedDissolved orthophosphate phosphorus
Phosphorus, orthophosphate totalTotal orthophosphate phosphorus
Phosphorus, particulateParticulate phosphorus
Phosphorus, particulate organicParticulate organic phosphorus in suspension
Phosphorus, phosphate (PO4)Phosphate phosphorus
Phosphorus, phosphate fluxPhosphate (PO4) flux
Phosphorus, polyphosphatePolyphosphate Phosphorus
Phosphorus, totalTotal Phosphorus
Phosphorus, total dissolvedTotal dissolved phosphorus
PhytanePhyane, a type of diterpenoid alkane, formula : C20H42. Synonyms: 2,6,10,14-Tetramethylhexadecane
PhytoplanktonMeasurement of phytoplankton with no differentiation between species
Piperonyl ButoxidePiperonyl Butoxide (C19H30O5)
Polycyclic aromatic hydrocarbon, alkylPolycyclic aromatic hydrocarbon (PAH) having at least one alkyl sidechain (methyl, ethyl or other alkyl group) attached to the aromatic ring structure
Polycyclic aromatic hydrocarbon, parentUnsubstituted (i.e., non-alkylated) polycyclic aromatic hydrocarbon (PAH)
Polycyclic aromatic hydrocarbon, totaltotal polycyclic aromatic hydrocarbon (PAH), also known as poly-aromatic hydrocarbons or polynuclear aromatic hydrocarbons
PositionPosition of an element that interacts with water such as reservoir gates
Potassium, dissolvedDissolved Potassium (K)
Potassium, totalTotal Potassium (K)
PrasinoxanthinPrasinoxanthin, C40H56O4
PrecipitationPrecipitation such as rainfall. Should not be confused with settling.
Pressure, absolutePressure
Pressure, gaugePressure relative to the local atmospheric or ambient pressure
Primary productivityPrimary Productivity
Primary productivity, grossRate at which an ecosystem accumulates energy by fixation of sunlight, including that consumed by the ecosystem.
Priority Pollutant PAHThe original 16 PAH compounds that the United States Environmental Protection Agency (EPA) has designated as priority pollutants: naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, dibenz(ah)anthracene, benzo[ghi]perylene, and indeno[1,2,3-cd]pyrene.
PristanePristane, a natural or synthetic isoprenoid hydrocarbon (C19) derivative, formula : C19H40. Synonyms: 2,6,10,14-Tetramethylpentadecane
Program signatureA unique data recorder program identifier which is useful for knowing when the source code in the data recorder has been modified.
PronamidePronamide (C12H11Cl2NO)
PropanePropane
Propane, dissolvedDissolved Propane (C3H8)
Propanoic acidPropanoic acid (C3H6O2)
Propylene glycolPropylene glycol (C3H8O2)
PyrenePyrene (C16H10), a polycyclic aromatic hydrocarbon (PAH)
PyridinePyridine (C5H5N)
Pyropheophorbide aPyropheophorbide a, C33H34N4O3
Radiation, incomingIncoming radiation
Radiation, incoming longwaveIncoming Longwave Radiation
Radiation, incoming PARIncoming Photosynthetically-Active Radiation
Radiation, incoming shortwaveIncoming Shortwave Radiation
Radiation, incoming UV-AIncoming Ultraviolet A Radiation
Radiation, incoming UV-BIncoming Ultraviolet B Radiation
Radiation, netNet Radiation
Radiation, net longwaveNet Longwave Radiation
Radiation, net PARNet Photosynthetically-Active Radiation
Radiation, net shortwaveNet Shortwave radiation
Radiation, outgoing longwaveOutgoing Longwave Radiation
Radiation, outgoing PAROutgoing Photosynthetically-Active Radiation
Radiation, outgoing shortwaveOutgoing Shortwave Radiation
Radiation, total incomingTotal amount of incoming radiation from all frequencies
Radiation, total outgoingTotal amount of outgoing radiation from all frequencies
Radiation, total shortwaveTotal Shortwave Radiation
Radium-226An isotope of radium in the uranium-238 decay series
Radium-228An isotope of radium in the thorium-232 decay series
Radon-222An isotope of radon
Rainfall rateA measure of the intensity of rainfall, calculated as the depth of water to fall over a given time period if the intensity were to remain constant over that time interval (in/hr, mm/hr, etc)
Real dielectric constantSoil reponse of a reflected standing electromagnetic wave of a particular frequency which is related to the stored energy within the medium. This is the real portion of the complex dielectric constant.
Recorder codeA code used to identifier a data recorder.
Reduction potentialOxidation-reduction potential
Relative humidityRelative humidity
RemarkManually added comment field to provide additional information about a particular record.
Reservoir storageReservoir water volume
Respiration, ecosystemGross carbon dioxide production by all organisms in an ecosystem. Ecosystem respiration is the sum of all respiration occurring by the living organisms in a specific ecosystem.
Respiration, netNet respiration
ReteneRetene (C18H18), a polycyclic aromatic hydrocarbon (PAH), also known as methyl isopropyl phenanthrene or 1-methyl-7-isopropyl phenanthrene
Rhenium, totalTotal Rhenium (Re)
Rubidium to Strontium molar ratioRubidium to Strontium (Rb:Sr) molar ratio
Rubidium, dissolvedDissolved Rubidium (Rb)
Ruthenium-106The most stable isotope of ruthenium with a half life of 373.59 days.
Salicornia bigelovii coverageAreal coverage of the plant Salicornia bigelovii
Salicornia virginica coverageAreal coverage of the plant Salicornia virginica
SalinitySalinity
Sand, totalTotal sand
Sap flowmovement of xylem sap in trees
Saturated petroleum hydrocarbon, totalTotal saturated petroleum hydrocarbon, i.e., total SHC
Secchi depthSecchi depth
Sediment, passing sieveThe amount of sediment passing a sieve in a gradation test
Sediment, retained on sieveThe amount of sediment retained on a sieve in a gradation test
Sediment, suspendedSuspended Sediment
Selenium, dissolvedDissolved selenium (Se). For chemical terms, dissolved indicates a filtered sample.
Selenium, distribution coefficientRatio of concentrations of selenium in two phases in equilibrium with each other. Phases must be specified.
Selenium, particulateParticulate selenium (Se) in suspension
Selenium, totalTotal Selenium (Se). For chemical terms, total indicates an unfiltered sample
Sensible heat fluxSensible Heat Flux
Sequence numberA counter of events in a sequence
Shannon diversity indexA diversity index that is based on the number of taxa, and the proportion of individuals in each taxa relative to the entire community, evaluated as entropy. Also known as Shannon-Weaver diversity index, the Shannon-Wiener index, the Shannon index and the Shannon entropy.
Shannon evenness indexA dimensionless diversity index, calculated as a ratio of the Shannon diversity index over its maximum. Also known as the Shannon Weaver evenness index
Sigma-tDensity of seawater calculated with in situ salinity and temperature, but pressure equal to zero, rather than the in situ pressure, and 1000 kg/m^3 is subtracted. Defined as (S,T)-1000 kg m-3, where (S,T) is the density of a sample of seawater at temperature T and salinity S, measured in kg m-3, at standard atmospheric pressure.
Signal-to-noise ratioSignal-to-noise ratio (often abbreviated SNR or S/N) is defined as the ratio of a signal power to the noise power corrupting the signal. The higher the ratio, the less obtrusive the background noise is.
SilicaSilica (SiO2)
Silica, dissolvedDissolved silica (SiO2)
SilicateSilicate. Chemical compound containing silicon, oxygen, and one or more metals, e.g., aluminum, barium, beryllium, calcium, iron, magnesium, manganese, potassium, sodium, or zirconium.
Silicic acidHydrated silica disolved in water
Silicic acid fluxSilicate acid (H4SiO4) flux
SiliconSilicon (Si)
Silicon, dissolvedDissolved Silicon (Si)
Silicon, particulateParticulate silicon (Si) in suspension
Silt, totalTotal silt
Silver, dissolvedDissolved silver (Ag). For chemical terms, dissolved indicates a filtered sample.
Silver, totalTotal Silver (Ag). For chemical terms, total represents an unfiltered sample.
SlopeRatio between two variables in a linear relationship.
Snow depthSnow depth
Snow water equivalentThe depth of water if a snow cover is completely melted, expressed in units of depth, on a corresponding horizontal surface area.
Sodium adsorption ratioSodium adsorption ratio
Sodium plus potassiumSodium plus potassium
Sodium, dissolvedDissolved Sodium (Na)
Sodium, fraction of cationsSodium, fraction of cations
Sodium, totalTotal Sodium (Na)
Solids, fixed dissolvedFixed Dissolved Solids
Solids, fixed suspendedFixed Suspended Solids
Solids, totalTotal Solids
Solids, total dissolvedTotal Dissolved Solids
Solids, total fixedTotal Fixed Solids
Solids, total suspendedTotal Suspended Solids
Solids, total volatileTotal Volatile Solids
Solids, volatile dissolvedVolatile Dissolved Solids
Solids, volatile suspendedVolatile Suspended Solids
Spartina alterniflora coverageAreal coverage of the plant Spartina alterniflora
Spartina spartinea coverageAreal coverage of the plant Spartina spartinea
Specific conductanceSpecific conductance
Speed of soundSpeed of sound in the medium sampled
SqualeneSqualene (C30H50)
StreamflowThe volume of water flowing past a fixed point.  Equivalent to discharge
Streptococci, fecalFecal Streptococci
Strontium, dissolvedDissolved Strontium (Sr)
Strontium, stable isotope ratioRatio of radiogenic Strontium to naturally occurring Strontium (Sr87:Sr86)
Strontium, totalTotal Strontium (Sr)
StyreneStyrene (C8H8)
Suaeda linearis coverageAreal coverage of the plant Suaeda linearis
Suaeda maritima coverageAreal coverage of the plant Suaeda maritima
Sulfate, dissolvedDissolved Sulfate (SO4)
Sulfate, totalTotal Sulfate (SO4)
Sulfide, dissolvedDissolved Sulfide
Sulfide, totalTotal sulfide
SulfurSulfur (S)
Sulfur dioxideSulfur dioxide (SO2)
Sulfur, dissolvedDissolved Sulfur (S)
Sulfur, organicOrganic Sulfur
Sulfur, pyriticPyritic Sulfur
Sunshine durationSunshine duration
Superoxide dismutase, activitySuperoxide dismutase (SOD) activity
Superoxide dismutase, delta cycle thresholdDelta cycle threshold for superoxide dismutase (sod). Cycle threshold is the PCR cycle number at which the fluorescent signal of the gene being amplified crosses the set threshold. Delta cycle threshold for sod is the difference between the cycle threshold (Ct) of sod gene expression and the cycle threshold (Ct) for the gene expression of the reference gene (e.g., beta-actin).
SUVA254Specific ultraviolet absorbance at 254 nm. Determined by absorbance normalized to DOC concentration.
Table overrun error countA counter which counts the number of datalogger table overrun errors
Tactile Water PresenceA Boolean indicator for the tactile presence of water on the landscape or on the soil surface, as it feels to a human observer's touch. Typically this variable is employed for wet/dry mapping or citizen science efforts.
Taxa countCount of unique taxa. A taxon (plural: taxa) is a group of one (or more) populations of organism(s), which is judged to be a unit.
TDR waveform relative lengthTime domain reflextometry, apparent length divided by probe length. Square root of dielectric
TemperatureTemperature
Temperature changetemperature change
Temperature, dataloggerTemperature, raw data from datalogger
Temperature, dew pointDew point temperature
Temperature, initialinitial temperature before heating
Temperature, sensorTemperature, raw data from sensor
Temperature, transducer signalTemperature, raw data from sensor
Temperature, wet-bulbTemperature of air when cooled to saturation by evaporation of water
TerbufosTerbufos (C9H21O2PS3)
TerpineolTerpineol (C10H18O)
Tert-Amyl Methyl EtherTert-Amyl Methyl Ether (C6H14O)
Tertiary Butyl AlcoholTertiary Butyl Alcohol (C4H10O)
TetraceneTetracene (C18H12), a polycyclic aromatic hydrocarbon (PAH), also known as naphthacene or benz[b]anthracene
TetrachloroetheneTetrachloroethene (C2Cl4)
Tetraethylene glycolTetraethylene glycol (C8H18O5)
TetrahydrofuranTetrahydrofuran (C4H8O)
TetramethylnaphthaleneTetramethylnaphthalene (C10H4(CH3)4), a polycyclic aromatic hydrocarbon (PAH)
Thallium, dissolvedDissolved thallium (Tl). "dissolved" indicates measurement was made on a filtered sample.
Thallium, distribution coefficientRatio of concentrations of thallium in two phases in equilibrium with each other. Phases must be specified.
Thallium, particulateParticulate thallium (Tl) in suspension
Thallium, totalTotal thallium (Tl). "Total" indicates was measured on a whole water (unfiltered) sample.
ThoriumThorium (Th)
Thorium, dissolvedDissolved thorium. For chemical terms, dissolved indicates a filtered sample.
Thorium-228An isotope of thorium in the thorium-232 decay series
Thorium-230An isotope of thorium in the thorium-232 decay series
Thorium-232A radioactive isotope of thorium which undergoes alpha decay
ThresholdA level above or below which an action is performed.
THSW IndexThe THSW Index uses temperature, humidity, solar radiation, and wind speed to calculate an apparent temperature.
THW IndexThe THW Index uses temperature, humidity, and wind speed to calculate an apparent temperature.
Tide stageTidal stage
Time StampThe time at which a sensor produces output
Time, elapsedTime elapsed since an event occurred
Tin, dissolvedDissolved tin (Sn). "Dissolved " indicates a the measurement was made on a filtered sample.
Tin, totalTotal tin (Sn)."Total" indicates was measured on a whole water (unfiltered) sample.
TitaniumTitanium (Ti)
Titanium, dissolvedDissolved Titanium
Tm-17a(H),21b(H)-22,29,30-TrisnorhopaneTm-17a(H),21b(H)-22,29,30-Trisnorhopane
TolueneToluene (C6H5CH3)
trans-1,2-Dichloroethenetrans-1,2-Dichloroethene (C2H2Cl2)
trans-1,3-Dichloropropenetrans-1,3-Dichloropropene (C3H4Cl2)
Transient species coverageAreal coverage of transient species
TranspirationTranspiration
Tributoxyethyl phosphateTributoxyethyl phosphate (C42H87O13P)
TrichloroetheneTrichloroethene (C2HCl3)
Triethylene glycolTriethylene glycol (C6H14O4)
TrifluralinTrifluralin (C13H16F3N3O4)
TriphenyleneTriphenylene (C18H12)
Tritium (3H), Delta T of H2OIsotope 3H of water
Ts-18a(H),21b(H)-22,29,30-TrisnorhopaneTs-18a(H),21b(H)-22,29,30-Trisnorhopane
TSICarlson Trophic State Index is a measurement of eutrophication based on Secchi depth
TurbidityTurbidity
UraniumUranium (U)
Uranium, dissolvedDissolved Uranium. For chemical terms, dissolved indicates a filtered sample.
Uranium-234An isotope of uranium in the uranium-238 decay series
Uranium-235An isotope of uranium that can sustain fission chain reaction
Uranium-238Uranium's most common isotope
UreaUrea ((NH2)2CO)
Urea fluxUrea ((NH2)2CO) flux
Vanadium, dissolvedDissolved vanadium (V). "Dissolved" indicates the measurement was made on a filtered sample.
Vanadium, particulateParticulate vanadium (V) in suspension
Vanadium, totalTotal vanadium (V). "Total" indicates was measured on a whole water (unfiltered) sample.
Vapor pressureThe pressure of a vapor in equilibrium with its non-vapor phases
Vapor pressure deficitThe difference between the actual water vapor pressure and the saturation of water vapor pressure at a particular temperature.
VelocityThe velocity of a substance, fluid or object
VisibilityVisibility
Visible Water PresenceA Boolean indicator for the visible presence of water on the landscape or on the soil surface, as it appears to a human observer's eyes. Typically this variable is employed for wet/dry mapping or citizen science efforts.
VoltageVoltage or Electrical Potential
VolumeVolume. To quantify discharge or hydrograph volume or some other volume measurement.
Volumetric water contentVolume of liquid water relative to bulk volume. Used for example to quantify soil moisture
Watchdog error countA counter which counts the number of total datalogger watchdog errors
Water column equivalent height, absoluteThe absolute pressure (combined water + barometric) on a sensor expressed as the height of an equivalent column of water.
Water column equivalent height, barometricBarometric pressure expressed as an equivalent height of water over the sensor.
Water ContentQuantity of water contained in a material or organism
Water depthWater depth is the distance between the water surface and the bottom of the water body at a specific location specified by the site location and offset.
Water depth, averagedWater depth averaged over a channel cross-section or water body.  Averaging method to be specified in methods.
Water fluxWater Flux
Water levelWater level relative to datum. The datum may be local or global such as NGVD 1929 and should be specified in the method description for associated data values.
Water potentialWater potential is the potential energy of water relative to pure free water (e.g. deionized water) in reference conditions. It quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure, or matrix effects including surface tension.
Water PresenceA Boolean indicator for the presence of water on the landscape or on the soil surface, in excess of a detection threshold, as indicated by a sensor
Water Use, AgricultureWater pumped for Agriculture
Water Use, Commercial + Industrial + PowerWater pumped by commercial, industrial users.
Water Use, Domestic wellsWater pumped by domestic wells; residents and landowners not using public supply. Nonagriculture wells.
Water Use, Public SupplyWater supplied by a public utility
Water Use, RecreationRecreational water use, for example golf courses.
Water vapor concentrationWater vapor concentration
Water vapor densityWater vapor density
Wave heightThe height of a surface wave, measured as the difference in elevation between the wave crest and an adjacent trough.
Weather conditionsWeather conditions
Well flow rateFlow rate from well while pumping
Wellhead pressureThe pressure exerted by the fluid at the wellhead or casinghead after the well has been shut off for a period of time, typically 24 hours
Wind chillThe effect of wind on the temperature felt on human skin.
Wind directionWind direction
Wind gust directionDirection of gusts of wind
Wind gust speedSpeed of gusts of wind
Wind RunThe length of flow of air past a point over a time interval. Windspeed times the interval of time.
Wind speedWind speed
Wind stressDrag or trangential force per unit area exerted on a surface by the adjacent layer of moving air
Wrack coverageAreal coverage of dead vegetation
Xylenes, totalTotal xylenes: C6H4(CH3)2
ZeaxanthinThe phytoplankton pigment Zeaxanthin
Zinc, dissolvedDissolved Zinc (Zn)
Zinc, distribution coefficientRatio of concentrations of zinc in two phases in equilibrium with each other. Phases must be specified.
Zinc, particulateParticulate zinc (Zn) in suspension
Zinc, totalTotal zinc (Zn)."Total" indicates was measured on a whole water (unfiltered) sample.
Zircon, dissolvedDissolved Zircon (Zr)
Zirconium, dissolvedDissolved Zirconium
Zirconium-95A radioactive isotope of zirconium with a half-life of 63 days
ZooplanktonZooplanktonic organisms, non-specific

© 2008 CUAHSI-HIS
This material is based upon work supported by the National Science Foundation (NSF) under Grant Nos. 04-12975, 041-3265, and 06-22374.
Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.