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OLS Field Name OLS Field Data
Main Title Organic Carbon Partitioning as a Basis for Predicting the Toxicity of Chlorpyrifos in Sediments.
Author Ankley, G. T. ; Call, D. J. ; Cox, J. S. ; Kahl, M. D. ; Hoke, R. A. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Lake Superior Research Inst.;Science Applications International Corp., Hackensack, NJ.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/256;
Stock Number PB94-176153
Additional Subjects Sediments ; Toxicity ; Pesticides ; Invertebrates ; Benthic fauna ; Midges ; Pore water ; Concentration(Composition) ; Mortality ; Separation ; Biological indicators ; Organic compounds ; Carbon ; Water pollution monitoring ; Assaying ; Reprints ; Chlorpyrifos ; Chironomus tentans ; SQC(Sediment quality criteria) ; Bioavailability
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NTIS  PB94-176153 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/01/1994
Collation 8p
Abstract The objective of the study was to evaluate an organic carbon partitioning model for predicting bioavailability of the organophosphate chlorpyrifos in sediments, in support of the development of a sediment-quality criterion for the pesticide. Initial 10-d water-only toxicity tests were conducted with the midge Chironomus tentans to define the sensitivity of this species to chlorpyrifos. Ten-day toxicity tests with Chironomus tentans were conducted with the spiked sediments under conditions similar to those in the water-only exposure. Based on predicted pore-water concentrations of chlorpyrifos, results of the water-only and sediment tests were in close agreement. Overall, these results suggest that within the range of organic carbon tested in the present study, an equilibrium partitioning model was based on organic carbon is appropriate for predicting the bioavailability of sediment-associated chlorpyrifos to benthic invertebrates.
Supplementary Notes Pub. in Environmental Toxicology and Chemistry, v13 n4 p621-626 1994. See also PB87-105367 and PB92-231521. Prepared in cooperation with Wisconsin Univ.-Superior. Lake Superior Research Inst. Sponsored by Science Applications International Corp., Hackensack, NJ.
Highlights Notes %AUT:P. A. /Kosian
NTIS Title Notes Journal article.
Title Annotations Reprint: Organic Carbon Partitioning as a Basis for Predicting the Toxicity of Chlorpyrifos in Sediments.
Category Codes 68D; 68E; 48E; 57H
NTIS Prices PC A02/MF A01
Primary Description 600/03
Document Type NT
Cataloging Source NTIS/MT
Control Number 420325044
Origin NTIS
Type CAT