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Electrochemical behaviour of cobalt and nickel complexes with ϵ-caprolactam at dropping mercury electrode

✍ Scribed by B.K. Puri; Ashok Kumar

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
251 KB
Volume
29
Category
Article
ISSN
0013-4686

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✦ Synopsis

The kinetics of polarographic reduction ofCo(II) and Ni(I1) has been investigated in the presence of increasing concentration of complex forming agent uiz wzaprolactam at pH 6.2 under constant ionic strength. In both the cases the waves were found to be diffusion controlled and irreversible. The values of the kinetic parameters M, and k;,k have been calculated as a function of the ligand concentration. The polarographic wave was precisely proportional to the concentration up to 3.5 mM of the metal ions. Hence the straight line is useful as a calibration curve in quantitative analysis of these two metal ions. The error does not exceed more than &0.2O/, in any case.

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