Preconcentration by cofiotation for the polarographic determination of traces of heavy metals in water

Bharathibai, Basu J and Rajagopalan, SR and Padma, DK (1994) Preconcentration by cofiotation for the polarographic determination of traces of heavy metals in water. Indian Journal of Chemical Technology, 1. pp. 248-250. ISSN 0376-4699

[img] PDF
IndJournalOfChemTechnology-1994.pdf

Download (2MB)

Abstract

Preconcentration by coflotation is employed to improve the detection limits for the determination of parts per billion levels of heavy metal ions such as copper(II), lead(lI), cadmium(II), zinc(II), nickel(II) and coba1t(II) in natural and sea water by differential pulse polarography (DPP). Trace amounts of these ions in water are coprecipitated on colloidal aluminium hydroxide and the precipitate is floated with the aid of sodium oleate and a stream of nitrogen bubbles. Experimental conditions are optimized to obtain maximum recovery of these ions by cofiotation. The effect of surfactant on the DPP peak currents of these ions in 'the supporting electrolyte used in this work is studied.

Item Type: Article
Uncontrolled Keywords: Polarographic determination, Coflotation
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 10 not found.
Date Deposited: 23 Aug 2011 08:25
Last Modified: 23 Aug 2011 08:25
URI: http://nal-ir.nal.res.in/id/eprint/9920

Actions (login required)

View Item View Item