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Effects of four different nanocrystalline CeO 2 -based catalysts on crustaceans Daphnia magna and early-life stages of zebrafish Danio rerio were studied. Pure CeO 2 and CuO–CeO 2 mixed oxides with a nominal 10, 15 and 20mol.% CuO content were tested. Pure CeO 2 provoked no effects, but CuO–CeO 2 mixed oxides induced some sublethal effects on fish and affected...
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