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氯化铯中硅的测定以往是直接用钼蓝分光光度法。由于硅钼杂多酸铯的溶解度小,故采取减少称样量来避免这一矛盾。然而高纯氯化铯中硅的测定就不能采用此法了。文献报道了用4-仲丁基-2-(α-甲苄基)苯酚(BAMBP)萃取分离铷铯,而对4-叔丁基-2-(α-甲苄基)苯酚(t-BAMBP)萃取铷铯的报道较少,用于分析的报道则更少。我们考察了t-BAM-BP对铯及其共存离子的萃取行为,利用其对铯萃取的特效性质,使铯进入有机相,达到分离基体的目的。使钼蓝分光光度法能测定高纯氯化铯中的硅。标准加入回收试验的回收率在98～101％,实际应用的结果满意。
Cesium chloride in the determination of silicon in the past directly with molybdenum blue spectrophotometry. Due to the low solubility of silico-molybdenum heteropolyacid cesium, it is taken to reduce the sample size to avoid this contradiction. However, the determination of silicon in high purity cesium chloride can not use this method. It has been reported in the literature that rubidium cesium is extracted and extracted with 4-sec-butyl-2- (α-methylbenzyl) phenol (BAMBP) There are fewer reports of rubidium cesium extraction and fewer reports for analysis. We investigated the extraction behavior of c-Ce and its coexisting ions by t-BAM-BP. With its special effect on cesium extraction, cesium enters the organic phase and achieves the purpose of separating the matrix. Molybdenum blue spectrophotometric determination of silicon in high purity cesium chloride. The standard recovery rate of recovery test was 98 ~ 101%, the results of practical application were satisfactory.