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报道了当水溶液中存在有适当浓度的钾离子时,用苯并-15-冠-5(B15C5)的硝基苯溶液可以定量地从水溶液中萃取高铼酸根(ReO_4~-)阴离子,与铼共存的大量钼等其它离子不被萃取。同时研究了铼的定量反萃和利用该反萃液直接比色测铼的实验条件。用饱和法确定的萃合物的组成为K(B15C5)_2ReO_4。
It has been reported that when the appropriate concentration of potassium ions is present in aqueous solution, the rhenium (ReO 4 -) anion can be quantitatively extracted from the aqueous solution with a nitrobenzene solution of benzo-15-crown-5 (B15C5) Coexisting large amounts of molybdenum and other ions are not extracted. At the same time, the experimental conditions of rhenium quantitative back-extraction and direct colorimetric determination of rhenium using the stripping solution were studied. The composition of the complex as determined by the saturation method is K (B15C5) _2ReO_4.