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S. E. Pratskova, E. I. Ageenko
Photometric determination of copper(II) by
catalytic action on the reaction of iron(III) reduction with thiosulphate ion
Abstract
A method is proposed for the kinetic determination
of copper(II) by its catalytic effect on the reduction of iron(III) with
thiosulfate ion, followed by photometric detection of the destruction of
iron(III) thiocyanate. Optimal reaction conditions were selected. Copper(II)
determination limit is 0.06 μg/cm3;
relative accuracy is 4%. The results are characterized by good convergence and
accuracy. The technique is applicable for the quantitative determination of
copper(II) in water.
Key words: copper, kinetic methods of analysis,
spectrophotometry, waste water.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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