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本文研究了钍的简单预富集方法,提出在盐酸介质中使用粉末743阳离子交换树脂定量吸附溶液中的钍。将粉末树脂抽滤至圆形滤纸片上,用X射线光谱仪测量。操作简便、分离效果好,捡出限较低,可用于地质、选矿、土壤、冶金样品中0.00x～ⅹⅹ%钍的测定。样品中含钍0.018%时测得的标准偏差为0.0011,变动系数为6.11%。
In this paper, a simple preconcentration method for thorium was studied. It was proposed that the thorium in the solution was quantitatively adsorbed using a powder 743 cation exchange resin in a hydrochloric acid medium. The powder resin was suction-filtered on round filter paper and measured with an X-ray spectrometer. The invention has the advantages of simple operation, good separation effect and low detection limit, and can be used for the determination of 0.00x ~ ⅹⅹ% thorium in geology, mineral processing, soil and metallurgy samples. The standard deviation of 0.018% with thorium was 0.0011 and the coefficient of variation was 6.11%.