Short Communication: Magnitude of Acute Toxicity of Marine Sediments Amended with Conventional Copper and Nanocopper

Copper is a well-known toxic metal to marine organisms. In this investigation, we measured and compared the acute toxicity of several forms of copper (including nanocopper) amended into a marine sediment with mysids and amphipods. For all the forms of copper tested, toxicity, measured as the LC50, ranged from 708 to > 2400 mg Cu/kg (dry sediment) for mysids and 258 to 1070 mg Cu/kg (dry sediment) for amphipods.