Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effects of Freezing on Toxicity of Sediments Contaminated with DDT and ENDRIN.
Author Schuytema, G. S. ; Nebeker, A. V. ; Griffis, W. L. ; Miller., C. E. ;
CORP Author Corvallis Environmental Research Lab., OR.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/199;
Stock Number PB90-138462
Additional Subjects Sediments ; DDT ; Toxicity ; Freezing ; Endrin ; Freshwater ; Exposure ; Tables(Charts) ; Carbon ; Reprints ; Hyalella azteca ; Temperature effects
Library Call Number Additional Info Location Last
NTIS  PB90-138462 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/15/1990
Collation 11p
Two freshwater sediments containing 3 and 11% total organic carbon (TOC) were spiked with DDT and endrin to compare the effects of cold (4 C) and frozen (-20 C) storage of the sediment on toxicity to the amphipod Hyalella azteca in 10-d tests. Toxicity of the DDT-spiked sediment was reduced when it was frozen for 14 d. LC50 values for cold-stored and frozen-stored sediments were 4.2 and 7.3 micro/g DDT (calculated on dry solids basis) at 3% sediment TOC and 11.1 and 23.2 micro/g DDT at 11% sediment TOC, respectively. Toxicity of the 3% TOC endrin-spiked sediment was reduced by freezing; it exhibited LC50s of 5.1 and 7.7 micro/g endrin, respectively, for cold and frozen storage. Toxicity of endrin in two tests in the 11% TOC sediment remained essentially unchanged by freezing. LC50s were 19.6 and 21.7 micro/g endrin for cold and frozen sediments in one test and 10.3 and 9.8 micro/g endrin in the second test.