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

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    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: Journal Article
    Uncontrolled Keywords: Polarographic determination, Coflotation
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: Materials Science Division, Materials Science Division, Other
    Depositing User: Ms Indrani V
    Date Deposited: 23 Aug 2011 13:55
    Last Modified: 23 Aug 2011 13:55
    URI: http://nal-ir.nal.res.in/id/eprint/9920

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