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A novel method was developed for enrichment and separation of trace mercury using phenolphthalein modified by ethyl violet (EV). The effects of different parameters, such as stirring time, various metal ions and salts, and the amounts of phenolphthalein, NH 4 SCN, and EV on the extraction rate of mercury were studied, to select the experimental conditions. Under optimum conditions, mercury...
A study of the transport of Cd 2+ ions through a tri-n-octylamine(TOA)--sorbital monooleate (Span 80)--oxylene liquid membrane has been performed with varying concentrations of HCl, KI, TOA, Span 80 and NaOH in the feed, membrane and stripping solutions. Maximum transport was observed at 0.01 M KI, 0.025 M HCl, 0.015 M TOA, 3% (w/v) Span 80 and 0.025 M NaOH. With this system, cadmium...
A study of the transport of Hg(II) ions through a tri-n-octylamine (TOA) - sorbital monooleate (Span 80) - toluene liquid membrane has been performed with varying concentrations of HCl, KCl, TOA, Span 80 and NaOH in the feed, membrane and stripping solutions. Maximum transport was observed with 0.01 M KCl, 2.5 10 -2 M HCl, 1.5 10 -2 M TOA, 3% (w/v) Span 80 and 0.05...
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