||Effects of variable hardness, pH, alkalinity, suspended clay, and humics on the chemical speciation and aquatic toxicity of copper
Nelson, H. ;
Benoit, D. ;
Erickson, R. ;
Mattson, V. ;
Lindberg, J. ;
||Environmental Research Lab.-Duluth, MN. ;Science Applications International Corp., McLean, VA. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.
||U.S. Environmental Protection Agency, Environmental Research Laboratory,
||PB86-171444 ; EPA/600/3-86/023
Water pollution ;
Lake Superior ;
Humic acids ;
Clay soils ;
Chemical properties ;
Inorganic compounds ;
Calcium carbonates ;
Magnesium carbonates ;
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||1 v. (various pagings), 132 leaves; 28 cm.
The effects of variable hardness, pH, alkalinity, humics, and suspended clay on the chemical speciation of copper and its toxicity to fathead minnow larvae in Lake Superior water were investigated. Two proposed methods (toxicity factors and chemical speciation) for predicting LC50 values in specific natural waters from laboratory toxicity data and the average site specific values of general water quality parameters were evaluated. The accuracy of the cupric ion selective electrode in determining CU+2 activities in ambient and chemically altered Lake Superior water was also determined.
Distributed to depository libraries in microfiche. "Mar 1986." "EPA/600/3-86/023." Bibliography: p. 4-11 through 4-17.