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Page 5459, results 136451 - 136475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
High-performance, liquid-chromatographic method for the analysis of polynuclear aromatic hydrocarbons in water
William R. White, Rolland R. Grabbe
1981, Water-Resources Investigations Report 81-63
High-performance liquid chromatography provides a rapid and sensitive means for determining polynuclear aromatic hydrocarbons in water samples. A high-performance liquid chromatograph, coupled with ultraviolet or fluorescence detectors has greater selectivity for analysis than methods using gas-chromatographic and flame-ionization systems.Several natural water samples were fortified with mixtures of polynuclear aromatic hydrocarbons...
Biological and economic impact of stream alteration in the Virginia Piedmont
James B. Whelan
1981, FWS/OBS 81/33
A 31 month (September 1974 - March 1977) study was conducted on warmwater streams located in the Roanoke Creek watershed of the Piedmont Region of Virginia. The purpose of the study was to determine the effects of stream channelization on the aquatic/riparian wildlife resource and agricultural land-use patterns associated with...
Water resources data
Water Resources Division, U.S. Geological Survey
1981, Report, U.S. Geological Survey water-supply paper
No abstract available....
Water resources data
Water Resources Division, U.S. Geological Survey
1981, Report, U.S. Geological Survey water-data report
No abstract available....
Uptake and depuration of petroleum hydrocarbons by crayfish
I. Barry Tarshis
1981, Archives of Environmental Contamination and Toxicology (10) 79-86
No differences were noted in the amount of naphthalene uptake (approximately 125μg) by individual crayfish exposed for 1, 2, or 4 hr at 25°C in open, non-aerated glass jars containing 14C-naphthalene-5% of a water-soluble fraction (WSF) of No. 2 fuel oil. The cephalothorax, containing the hepatopancreas (a food absorption organ),...
Water resources data
Iowa Geological Survey
1981, Report, U.S. Geological Survey water-supply paper
No abstract available....