Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory determination of nonpurgeable suspended organic carbon by wet-chemical oxidation and infrared sp...

Published: U.S. Dept. of the Interior, U.S. Geological Survey : Information Services [distributor], 1997

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

Published: U.S. Dept. of the Interior, U.S. Geological Survey : Earth Science Information Center, Open-File Reports Section [distributor], 1995

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory arsenic speciation in natural-water samples using laboratory and field methods

by Garbarino, John R.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2002

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory extraction of nitroaromatic compounds from water by polystyrene divinylbenzene cartridge and det...

by Lindley, Chris E.
Published: U.S. Dept. of the Interior, U.S. Geological Survey : ESIC/Open-File Reports Section [distributor], 1994

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : arsenic speciation in natural-water samples using laboratory and field methods

by Garbarino, John R.
Published: U.S. Dept. of the Interior, U.S. Geological Survey : U.S. Geological Survey, Branch of Information Services [distributor], 2002

Concentration of selected sulfonylurea, sulfonamide, and imidazolinone herbicides, other pesticides, and nutrients in 71 streams, 5 reservoir outflows, and 25 wells in the midweste...

by Battaglin, William A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey : Information Services [distributor], 2001

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory determination of pesticides in water by Carbopak-B solid-phase extraction and high-performance l...

by Werner, Stephen L.
Published: U.S. Dept. of the Interior, U.S. Geological Survey : Branch of Information Services [distributor], 1996

Concentration of selected sulfonylurea, sulfonamide, and imidazolinone herbicides, other pesticides, and nutrients in 71 streams, 5 reservoir outflows, and 25 wells in the midweste...

by Battaglin, William A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2001

Determination of wastewater compounds in sediment and soil by pressurized solvent extraction, solid-phase extraction, and capillary-column gas chromatography/mass spectrometry

Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2006