Dagobert G Heijerick

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The effects of Ca, Mg, Na and pH on the acute toxicity of Ni to Daphnia magna were investigated in a series of 48-h immobilization assays in synthetic test solutions. Both Ca and Mg reduced Ni(More)
Water quality criteria are mainly based on data obtained in toxicity tests with single toxicants. Several authors have demonstrated that this approach may be inadequate as the joint action of the(More)