ヘキサン希釈によるメチルイソブチルケトンからの水銀(II) ヨウ化物、タリウム(III) 塩化物金属錯体の逆抽出

概要

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A method for the back-extraction of metal complexes in methylisobutyl ketone (MIBK) by its dilution with hexane is proposed on the basis of drastic decrease in the metal extraction into this solvent as a result of dilution with a nonpolar solvent.Extraction and back-extraction of mercury (II) iodide and thallium(III) chloride complexes were demonstrated as examples. The metal ion was first extracted from the sodium halide soltion into MIBK. Then a portion of this MIBK was diluted with a certain volume of hexane and was agitated with a solution of the same sodium halide. The distribution ratio of this back-extraction was calculated. The extraction was impaired very much by the dilution; dilution of one volume of MIBK with three volumes of hexane enabled back-extraction of more than 9O% of the metal ion into one volume of the halide solution from which more than 99% of the metal ion was extacted into undiluted MIBK. The statistical treatment of this back-extraction is given and the possibility of the use of this method for various metal ions is considered.
社団法人日本分析化学会の論文
1975-10-10