Publications
Filter Total Items: 92
Determination of wastewater compounds in sediment and soil by pressurized solvent extraction, solid-phase extraction, and capillary-column gas chromatography/mass spectrometry Determination of wastewater compounds in sediment and soil by pressurized solvent extraction, solid-phase extraction, and capillary-column gas chromatography/mass spectrometry
No abstract available.
Authors
Mark R. Burkhardt, Steven D. Zaugg, Steven G. Smith, Rhiannon C. ReVello
Chapter 3. Determination of semivolatile organic compounds and polycyclic aromatic hydrocarbons in solids by gas chromatography/mass spectrometry Chapter 3. Determination of semivolatile organic compounds and polycyclic aromatic hydrocarbons in solids by gas chromatography/mass spectrometry
A method for the determination of 38 polycyclic aromatic hydrocarbons (PAHs) and semivolatile organic compounds in solid samples is described. Samples are extracted using a pressurized solvent extraction system. The compounds of interest are extracted from the solid sample twice at 13,800 kilopascals; first at 120 degrees Celsius using a water/isopropyl alcohol mixture (50:50, volume-to...
Authors
Steven D. Zaugg, Mark R. Burkhardt, Teresa L. Burbank, Mary C. Olson, Jana L. Iverson, Michael P. Schroeder
Chapter 1. Determination of elements in natural-water, biota, sediment, and soil samples using collision/reaction cell inductively coupled plasma-mass spectrometry Chapter 1. Determination of elements in natural-water, biota, sediment, and soil samples using collision/reaction cell inductively coupled plasma-mass spectrometry
No abstract available.
Authors
John R. Garbarino, Leslie K. Kanagy, Mark E. Cree
Adventive Hylaeus (Spatulariella Popov) in the New World (Hymenoptera : Apoidea : Colletidae) Adventive Hylaeus (Spatulariella Popov) in the New World (Hymenoptera : Apoidea : Colletidae)
No abstract available.
Authors
J.S. Ascher, P. Ganibino, Sam Droege
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas chromatography/mass spectrometry Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas chromatography/mass spectrometry
A method for the determination of 67 compounds typically found in domestic and industrial wastewater is described. The method was developed in response to increasing concern over the impact of endocrine-disrupting chemicals in wastewater on aquatic organisms. This method also may be useful for evaluating the impact of combined sanitary and storm-sewer overflow on the water quality of...
Authors
Steven D. Zaugg, Steven G. Smith, Michael P. Schroeder, Larry B. Barber, Mark R. Burkhardt
Determination of low concentrations of acetochlor in water by automated solid-phase extraction and gas chromatography with mass-selective detection Determination of low concentrations of acetochlor in water by automated solid-phase extraction and gas chromatography with mass-selective detection
A sensitive and reliable gas chromatographic/mass spectrometric (GC/MS) method for determining acetochlor in environmental water samples was developed. The method involves automated extraction of the herbicide from a filtered 1 L water sample through a C18 solid-phase extraction column, elution from the column with hexane-isopropyl alcohol (3 + 1), and concentration of the extract with...
Authors
C.E. Lindley, J.T. Stewart, Mark W. Sandstrom
Filtration of water-sediment samples for the determination of organic compounds Filtration of water-sediment samples for the determination of organic compounds
This report describes the equipment and procedures used for on-site filtration of surface-water and ground-water samples for determination of organic compounds. Glass-fiber filters and a positive displacement pumping system are suitable for processing most samples for organic analyses. An optional system that uses disposable in-line membrane filters is suitable for a specific gas...
Authors
Mark W. Sandstrom
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of chlorinated pesticides in aquatic tissue by capillary-column gas chromatography with electron-capture detection Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; determination of chlorinated pesticides in aquatic tissue by capillary-column gas chromatography with electron-capture detection
A method for the determination of chlorinated organic compounds in aquatic tissue by dual capillary-column gas chromatography with electron-capture detection is described. Whole-body-fish or corbicula tissue is homogenized, Soxhlet extracted, lipid removed by gel permeation chromatography, and fractionated using alumina/silica adsorption chromatography. The extracts are analyzed by...
Authors
Thomas J. Leiker, James E. Madsen, Jeffrey R. Deacon, William T. Foreman