P204萃淋树脂反相萃取色谱分离富集光度法测定岩石矿物中痕量铍

Preconcentration and Separation by Use of P204 Extraction Resin for the Spectrophotometric Determination of Trace Beryllium

摘要: 研究了国产P204萃淋树脂反相萃取色谱分离富集岩石矿物中的痕量铍。在EDTA-Zn和H_2O_2存在下,上柱分离Fe、Ti、Al以及大量其它常见元素,再用5mol/L HCl洗脱Be后进行测定。方法用地质标准物质分析验证,其结果与推荐值吻合,对含Be为0.0092％的硅酸盐岩石样品进行7次平行分析,(?)=0.0091％,RSD=5.4％。

Abstract: The curcumin method is not sufficiently sensitive to allow a direct spectrophotometric determination of trace Be in rocks and minerals. A method is developed to effect the preconcentration and separation by extraction chromatography. It was shown that in