Liquid - Liquid Extraction of Cadmium(II) and Lead(II) as their Ethyl Xanthates

Microanalytical Laboratory, Department of Pure Chemistry, Universiry of Calcutta,

92, Acharya Prafulla Chandra Road, Calcutta-700 009

Department of Chemistry, Jadavpur University, Calcutta-700 032

Manuscript received 11 August 1992, revised 4 December 1992, accepted 7 January 1993

Methods of quantitative extraction of cadmium and lead with potassium ethylxanthate into carbon tetrachloride, the effect of sixteen cations and ten aniom on these extractions, their separation from the interfering ions in binary, ternary and quarternary mixtures as well as estimation (EDTA) after stripping are described. Applicability of the methods are established through analysis of Zn and Pb in standard ores, alloys and scrap material.