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本文研究了偶氮氯膦Ⅲ-正丁醇萃取微量铀(Ⅵ)的条件以及络合物在正丁醇中的组成和不稳定常数。用8-羟基喹啉-乙酸乙酯(或氯仿)萃取分离干扰元素(在4%碳酸铵溶液中),拟订了废水中微量铀(Ⅵ)的萃取光度法。方法灵敏度高,对含铀(Ⅵ)量为0.02微克/毫升以上的废水测定获得满意的结果。
In this paper, the conditions for the extraction of trace uranium (Ⅵ) from III-n-butanol and the composition and unstable constants of the complex in n-butanol were studied. Extraction of interfering elements (in 4% ammonium carbonate solution) with 8-hydroxyquinoline-ethyl acetate (or chloroform) extracts the extraction spectrophotometry of trace uranium (Ⅵ) in wastewater. The method has high sensitivity and satisfactory results were obtained for the determination of wastewater containing uranium (Ⅵ) above 0.02 μg / ml.