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Cl—5208萃淋树脂是中性膦类树脂,具有对铀、钍吸附容量大,水溶性少,流速快等优点。本文研究了用Cl—5208树脂吸附分离铀,钍及其他元素的条件,拟定了采用铂坩埚偏硼酸锂熔矿,ICP—AES和AAS法测定方钍石、晶质铀矿中的钍、铀、铅、铁、铝、钙、镁、钛、锰、钾、钠、硅等12个元素的方法。在本实验条件下,钍60μg/ml、铀40μg/ml均能定量上柱并回收,且与铅20μg/ml、硅10μg/ml、铁、铝、钙、镁8μg/ml、锰、钛4μg/ml定量分离(以上均不是最大试验量)。本法具有取样量少(5mg),操作简便,快速,并适于其它铀钍矿物分析。
Cl-5208 extraction resin is a neutral phosphine resin, with uranium, thorium adsorption capacity, less water-soluble, fast flow rate and so on. In this paper, the conditions for the separation of uranium, thorium and other elements by Cl-5208 resin were studied. The determination of thorium, uranium , Lead, iron, aluminum, calcium, magnesium, titanium, manganese, potassium, sodium, silicon and other 12 elements of the method. Under the experimental conditions, thorium 60μg / ml, uranium 40μg / ml can be quantified on the column and recovered, and lead 20μg / ml, silicon 10μg / ml, iron, aluminum, calcium and magnesium 8μg / ml, manganese, titanium 4μg / ml quantitative separation (none of the above is the maximum amount of test). This method has a small amount of sampling (5mg), easy to operate, fast, and suitable for other uranium-thorium mineral analysis.