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Determination of cadmium by differentialn pulse anodic-stripping voltammetry after salting-out extraction into acetonitrile

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
31
Issue
5
Identifiers
DOI: 10.1016/0039-9140(84)80099-5

Abstract

Abstract A selective and specific method is presented for anodic-stripping voltammetric determination of cadmium after extraction with 0.1 Mtetrabutylammonium iodide solution in acetonitrile from aqueous ammonium sulphate solutions. The detection limit of this method is 0.2 ng ml (in the acetonitrile extract). Interference from matrices or large amounts of elements reduced at more positive potentials can be eliminated by prior extraction. The method has been applied to trace analysis for cadmium in zinc, lead and indium metals, and some inorganic salts.

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