Extraction of Arsenic(III) with Macroporous Resin Impregnated with Bis(2-ethylhexyl)ammonium Bis(2-ethylhexyl)-dithiocarbamate.

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  • Extraction of Arsenic 3 with Macroporou

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The extraction of arsenic(III) was investigated by using macroporous resin impregnated with a newly synthesized hydrophobic extractant: bis(2-ethylhexyl)ammonium bis(2-ethylhexyl)dithiocarbamate (BBDC). In a preliminary experiment on liquid-liquid extraction, arsenic(III) was favorably extracted with BBDC in heptane from acidic to neutral solutions; the distribution ratios with 0.01 mol dm-3 BBDC were larger than 102.5 at pH 0 - 6. The batchwise extraction of arsenic(III) with the impregnated resin was carried out. The distribution ratio was more than 103 in an acidic region, and sharply decreased above pH 8. The collection of a trace amount of arsenic(III) was performed by using the column packed with the impregnated resin as a stationary phase. Then arsenic(III) retained on the column was quantitatively eluted out with an alkaline solution.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 14 (2), 299-303, 1998

    社団法人 日本分析化学会

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