Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Toxicity of Copper to Cutthroat Trout ('Salmo clarki') under Different Conditions of Alkalinity, pH, and Hardness.
Author Chakoumakos, Charles ; Russo, Rosemarie C. ; Thurston, Robert V. ;
CORP Author Montana State Univ., Bozeman. Fisheries Bioassay Lab.;Environmental Research Lab.-Duluth, Monticello, MN.
Year Published 1981
Report Number EPA-R-800861; EPA-600/J-79-122;
Stock Number PB81-184798
Additional Subjects Copper ; Toxicology ; Lethal dosage ; Concentration(Composition) ; Fishes ; pH ; Hardness ; Alkalinity ; Bioassay ; Reprints ; Toxic substances ; Salmo clarki ; Cutthroat trout ; Rainbow trout ; Salmo gairdneri ; Heavy metals
Library Call Number Additional Info Location Last
NTIS  PB81-184798 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 9p
Median lethal concentration (96-h LC50) values for acute copper toxicity to 3-10 g cutthroat trout (Salmo clarki) have been determined for nine different combinations of alkalinity, hardness, and pH. Equilibrium calculations were performed on the copper LC50 values; seven different soluble species of copper were considered: Cu2+, CuOH+, Cu(OH)20, Cu2-(OH)22+, CuHCO3+, CuHCO30, and Cu(C03)22-. The acute toxicity of copper was inversely correlated with water hardness and alkalinity. At a given alkalinity, hardness determined the LC50; at a given hardness, alkalinity determined the LC50. At a given alkalinity and hardness, the concentrations of the copper species were determined by the pH of the water. Under the conditions tested, Cu2+, CuOH+, Cu(OH)20, and Cu2(OH)22+ were toxic forms of copper to cutthroat trout; CuHCO3+, CuCO30 and cu(CO3)22- were not toxic. Results of 11 96-h copper toxicity bioassays on 1- to 26-g rainbow trout (Salmo gairdneri) under uniform water chemistry conditions also reported.