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本文提出在小体积中用乙醇和硫酸联苯胺沉淀分离富集锶、钡,然后用X射线荧光光谱测定。既解决了常规化学法锶钡沉淀不完全的弱点,又克服了直接X射线荧光光谱法测定矿石中微量元素对灵敏度低、基体效应影响严重之弊病。沉淀时的硫酸、硫酸联苓胺及乙醇的用量和溶液的体积、沉淀放置的时间、共存元素的干扰和标问准回收等都进行了试验,且拟定出一个简单快速的分析流程。本法具准确、快速、灵敏的特点。
This paper presents the separation and enrichment of strontium and barium with ethanol and benzidine sulfate precipitation in a small volume followed by X-ray fluorescence spectrometry. The invention not only solves the defects of incomplete precipitation of barium strontium by conventional chemical method but also overcomes the defects of direct determination of trace elements in ore by the direct X-ray fluorescence spectrometry for low sensitivity and matrix effect. The amount of sulfuric acid, triprolidine sulfate and ethanol, the volume of solution, the time of precipitation, the interference of coexisting elements and the standard quasi-recovery were all tested when precipitation, and a simple and quick analysis procedure was drawn up. The law is accurate, fast and sensitive features.