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The coppermercury film electrode has been suggested for the determination of Se(IV) in a wide range of concentration from 1109 to 1106molL1 by square-wave cathodic stripping voltammetry. Insufficient reproducibility and sensitivity of the mercury film electrode have been overcome by using copper(II) ions during the plating procedure. Copper(II) has been found to be reduced and form a reproducible...
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