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A new method for the determination of mercury(II) has been proposed. The method is based upon the solvent extraction of the associated complex formed between the 2,2′-dipyridyl iron(II) chelate cation and the tetraiodo-mercury(II) complex anion and upon the estimation of the absorbance belonging to the chelate cation in the organic phase. The interference of diverse ions is eliminated by using ethylenediaminetetraacetate as a masking agent.
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Keiya KOTSUJI (1965) studied this question.
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