Original scientific paper

Application of Anodic Stripping Voltammetry to Determination of the State of Complexation of Traces of Metal Ions at Low Concentration Levels

M. Branica ; Laboratory for Physico-Chemicai Separations, Center for Marine Research, Ruder Boskovic Institute, 41001 Zagreb, Croatia, Yugoslavia
D. M. Novak ; Laboratory for Physico-Chemicai Separations, Center for Marine Research, Ruder Boskovic Institute, 41001 Zagreb, Croatia, Yugoslavia
S. Bubić ; Laboratory for Physico-Chemicai Separations, Center for Marine Research, Ruder Boskovic Institute, 41001 Zagreb, Croatia, Yugoslavia

Abstract

A modified method of anodic stripping voltammetry for determination
of the ionic form (state of complexation) of metal ions at
very low concentration levels (down to 10-9 M) is discussed. The
sensitivity and utility of the procedure is compared with that of
classical d. c. polarography. The complexation of cadmium at a
concentration' of 5 X 10-9 M with chloride in the solutions· of constant
ionic strengthμ= 0.7 (NaCl04 +NaCl) was investigated as an
illustration of the method. Also the complexation of lead at
2 X 10-s M with chloride ion at various concentrations was determined
under the same conditions.

Keywords

Hrčak ID:

196352

URI

https://hrcak.srce.hr/196352

Publication date:

20.7.1977.

Visits: 603 *