ジベンゾ-18-クラウン-6を用いる銅ジンコン錯体のブタノール抽出

概要

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The method is based on the extraction of ion-pair formed between copper-zincon anion and potassium-dibenzo-18-crown-6 cation (K-DBC-6). A sample containing (2〜40) *g of copper was taken into a 100 ml separating funnel and diluted to 50 ml with water. After addition of 1 ml of zincon solution (0.12%) and 2ml of potassium citrate solution (10 %), the pH of the solution was adjusted to about 13 with a potassium hydroxide solution (2.5 M). The solution was then shaken with 20 ml of K-DBC-6 solution (0.1 %) in butanol for 2 min and allowed to stand for (2〜3) min. The absorbance of organic phase was measured at 610 nm against butanol. In this method 93 % of the ion-pair of copper-zincon and K-DBC-6 can be extracted while the excess of zincon remaines in the aqueous phase. A linear calibration curve is obtained.
社団法人日本分析化学会の論文
1982-10-05