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RECORD NUMBER: 23 OF 25

Main Title Toxicity of Pentachlorophenol to Aquatic Organisms under Naturally Varying and Controlled Environmental Conditions.
Author Hedtke, S. F.; West, C. W.; Allen, K. N.; Norberg-King, T. J.; Mount, D. I.;
CORP Author Environmental Research Lab.-Duluth, Monticello, MN. Monticello Ecological Research Station.
Year Published 1986
Report Number EPA/600/J-86/466;
Stock Number PB88-224977
Subjects Toxicity; Toxicology; Concentration(Composition); Invertebrates; Fishes; Reproduction(Biology); Reprints; Water pollution effects(Animals); Phenol/pentachloro; Toxic substances; Aquatic organisms
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB88-224977 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/29/1988
Collation 14p
Abstract The toxicity of pentachlorophenol (PCP) was determined in the laboratory for 11 aquatic species. Tests were conducted seasonally in ambient Mississippi River water and under controlled conditions in Lake Superior water. Fifty-one acute toxicity tests were conducted, with LC50 values ranging from 85 micrograms/L for the white sucker Catastomus commersoni during the summer to greater than 7,770 micrograms/L for the isopod Asellus racovitzai during the winter. The effect of PCP on growth and/or reproduction was determined for seven species. The most sensitive chronically exposed organisms were the cladoceran Ceriodaphnia reticulata and the snail Physa gyrina. The greatest variation in toxicity was due to species sensitivity. Within a given season there was as much as a 40-fold difference in LC50 values between species. For any one species, the maximum variation in LC50 between seasons was approximately 14-fold. There were also substantial differences in acute-chronic relationships, with acute/chronic ratios ranging from greater than 37 for C. reticulata to 1 for Simocephalus vetulus. It is suggested that the composition of the aquatic community should be the most important consideration in estimating the potential environmental effects of PCP.
Supplementary Notes Pub. in Environmental Toxicology and Chemistry, v5 p531-542 1986.
NTIS Title Notes Journal article.
Title Annotations Reprint: Toxicity of Pentachlorophenol to Aquatic Organisms under Naturally Varying and Controlled Environmental Conditions.
PUB Date Free Form Jun 86
Category Codes 57Y; 57H; 68D
NTIS Prices PC A03/MF A01
Primary Description 600/03
Document Type NT
Control Number 826018035
Cataloging Source NTIS/MT
Origin NTIS
Type CAT


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