Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of the total phosphorus by a Kjeldahl digestion method and an automated colorimetric finish that includes dialysis

Open-File Report ◽

10.3133/ofr92146 ◽

1992 ◽

Cited By ~ 11

Author(s):

Charles J. Patton ◽

Earl P. Truitt

Keyword(s):

Water Quality ◽

Total Phosphorus ◽

Geological Survey ◽

Digestion Method ◽

Methods Of Analysis ◽

Laboratory Determination ◽

Kjeldahl Digestion ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of triazine and other nitrogen-containing compounds by gas chromatography with nitrogen phosphorus detectors

Open-File Report ◽

10.3133/ofr9437 ◽

1994 ◽

Author(s):

D.J. Markovchick ◽

J.A. Lewis ◽

R.W. Brenton ◽

J.L. Iverson ◽

H.L. Wharry

Keyword(s):

Water Quality ◽

Gas Chromatography ◽

Geological Survey ◽

Methods Of Analysis ◽

Laboratory Determination ◽

Nitrogen Containing Compounds ◽

Nitrogen Phosphorus ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of ammonium plus organic nitrogen by a Kjeldahl digestion method and an automated photometric finish that includes digest cleanup by gas diffusion

Open-File Report ◽

10.3133/ofr00170 ◽

2000 ◽

Cited By ~ 16

Author(s):

Charles J. Patton ◽

Earl P. Truitt

Keyword(s):

Water Quality ◽

Organic Nitrogen ◽

Gas Diffusion ◽

Geological Survey ◽

Digestion Method ◽

Laboratory Determination ◽

Kjeldahl Digestion ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of antimony by automated-hydride atomic absorption spectrophotometry

Open-File Report ◽

10.3133/ofr93664 ◽

1994 ◽

Author(s):

G.E. Brown ◽

B.J. McLain

Keyword(s):

Water Quality ◽

Atomic Absorption ◽

Atomic Absorption Spectrophotometry ◽

Geological Survey ◽

Absorption Spectrophotometry ◽

Methods Of Analysis ◽

Laboratory Determination ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; a method supplement for the determination of Fipronil and degradates in water by gas chromatography/mass spectrometry

Open-File Report ◽

10.3133/ofr02462 ◽

2002 ◽

Cited By ~ 2

Author(s):

James F. Madsen ◽

Mark W. Sandstrom ◽

Steven D. Zaugg

Keyword(s):

Mass Spectrometry ◽

Water Quality ◽

Gas Chromatography ◽

Geological Survey ◽

Gas Chromatography Mass Spectrometry ◽

Chromatography Mass Spectrometry ◽

Methods Of Analysis ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of inorganic and organic constituents in water and fluvial sediments

Open-File Report ◽

10.3133/ofr93125 ◽

1993 ◽

Cited By ~ 91

Keyword(s):

Water Quality ◽

Geological Survey ◽

Fluvial Sediments ◽

Organic Constituents ◽

Methods Of Analysis ◽

Laboratory Determination ◽

The U.S ◽

National Water ◽

Inorganic And Organic

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of methylene blue active substances by spectrophotometry

Open-File Report ◽

10.3133/ofr95189 ◽

1995 ◽

Cited By ~ 1

Author(s):

Mark R. Burkhardt ◽

Pete J. Cinotto ◽

Galen W. Frahm ◽

Mark T. Woodworth ◽

Jeffrey W. Pritt

Keyword(s):

Water Quality ◽

Methylene Blue ◽

Geological Survey ◽

Methods Of Analysis ◽

Laboratory Determination ◽

Active Substances ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of molybdenum in water by graphite furnace atomic absorption spectrophotometry

Open-File Report ◽

10.3133/ofr97198 ◽

1997 ◽

Author(s):

Sandra R. Jones ◽

Betty J. McLain

Keyword(s):

Water Quality ◽

Atomic Absorption ◽

Graphite Furnace ◽

Atomic Absorption Spectrophotometry ◽

Geological Survey ◽

Absorption Spectrophotometry ◽

Graphite Furnace Atomic Absorption ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of selected carbamate pesticides in water by high-performance liquid chromatography

Open-File Report ◽

10.3133/ofr93650 ◽

1994 ◽

Author(s):

S.L. Werner ◽

S.M. Johnson

Keyword(s):

Water Quality ◽

High Performance Liquid Chromatography ◽

Liquid Chromatography ◽

High Performance ◽

Geological Survey ◽

Carbamate Pesticides ◽

Pesticides In Water ◽

The U.S ◽

National Water

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of organophosphate pesticides in filtered water by gas chromatography with flame photometric detection

10.3133/wri024071 ◽

2002 ◽

Keyword(s):

Water Quality ◽

Gas Chromatography ◽

Geological Survey ◽

Organophosphate Pesticides ◽

Photometric Detection ◽

Laboratory Determination ◽

Flame Photometric Detection ◽

The U.S ◽

National Water

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