P267 Toxicity and bioaccumulation of uranium in freshwater invertebrates. Muscatello, Jorgelina*,1, Liber, Karsten1, 1 Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada

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P268 Prediction of Acute Toxicity of Copper to Mytilus edulis Using the Biotic Ligand Model. Arnold, W*,1, Santore, R2, Lee, C3, 1 Copper Development Association Inc., New York, NY2 HydroQual, Inc., Camillus, NY3 International Copper Association, New York, NY

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P269 On the Aquatic Hazard Classification of Metals and Alloys. Skeaff, Jim*,1, McGeer, Jim1, King, Morgan1, Nadeau, Jennifer1, 1 CANMET, Mining and Mineral Sciences Laboratories, NRCan, Ottawa, Ont., Canada

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P270 Concentrations of copper in waters of Brazil. Bianchini, Adalto*,1, 1 Fundação Universidade Federal do Rio Grande, Rio Grande, RS, Brazil

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P271 Review of Uptake and Depuration Kinetics for Metals in Aquatic Biota and Implications for Hazard Classification. DeForest, David*,1, Brix, Kevin2, Toll, John1, Adams, William3, 1 Parametrix, Inc., Kirkland, WA, USA2 EcoTox, Newport, OR, USA3 Kennecott Utah Copper, Magna, UT, USA

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P272 Quiescent Transformation Studies of the Metals Cd, Cu, Ni and Zn for Hazard Identification. Skeaff, Jim*,1, Adams, William2, McGeer, Jim1, King, Morgan1, 1 CANMET, Mining and Mineral Sciences Laboratories, NRCan, Ottawa, Ont., Canada2 Kennecott Copper, Magna, Utah, U.S.A.

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