Record Display for the EPA National Library CatalogRECORD NUMBER: 2 OF 4
|Main Title||Effects of Inorganic Complexing on the Toxicity of Copper to 'Daphnia magna'.|
|Author||Andrew, R. W. ; Biesinger, K. E. ; Glass., G. E. ;|
|CORP Author||Environmental Research Lab.-Duluth, Minn.|
|Stock Number||PB-266 311|
|Additional Subjects||Toxicity ; Copper ; Crustacea ; Metals ; Experimental design ; pH ; Complex compounds ; Mortality ; Survival ; Carbonates ; Bicarbonates ; Metal complexes ; Concentration(Composition) ; Inorganic phosphates ; Lake Superior ; Tables(Data) ; Aquatic animals ; Water pollution ; Bioassay ; Experimental data ; Daphnia magna ; Reprints ; Water pollution effects(Animals)|
The report includes the effects of carbonate-bicarbonate, orthophosphate, and pyrophosphate on the toxicity of copper (II) to Daphnia magna studied at constant pH and total hardness. Mortality rates and reciprocal survival times were directly correlated with cupric (Cu2+) and copper hydroxy (Cu(OH)n) ion activities as determined by equilibrium calculations. Toxicity was negatively related to activities of soluble copper carbonate (CuCO3) and other complexes, and was found to be independent of dissolved copper or total copper concentrations.