Incidence de la complexation sur la toxicite du cadmium et du cuivre vis a vis de daphnia magna

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Abstract
Differential pulse anodic stripping voltametry and equilibrium computation were used to determine the levels of copper and cadmium, in free ionic state and in complexed species, under the effect of EDTA and HK2PO4. A variation of short term toxicity between the two chemical species was observed on the daphnia. The results of this study lead to conclusions on the stoechiometry and stability of these complexes, and on the determination of the toxic chemical species.