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本文重点报道用CPA-Ⅰ试剂溶液与D_(290)大孔强碱性阴离子树脂经简单搅拌而制得的CPA-Ⅰ整合形成树脂,分离岩石中基体元素,富集稀土元素,然后用ICP-AES法测定15个稀土分量。实验表明,在一定量乳酸、EDTA-Zn及抗坏血酸存在下,于pH_1-1.5,15个稀土元素的回收率均在94-106％之间,柱上分离时间约两小时,相对标准偏差<5％。分析标准沉积物及岩石样品本法所得结果与推荐值满意地一致。
This paper focuses on the CPA-Ⅰ reagent solution and D 290 macroporous strongly basic anion resin prepared by simple mixing of CPA-Ⅰ integrated resin formation, separation of rock matrix elements, enrichment of rare earth elements, and then by ICP- AES method for the determination of 15 rare earth components. The experimental results showed that the recoveries of some rare earth elements in pH_1-1.5 and rare earth elements were between 94-106% in the presence of a certain amount of lactic acid, EDTA-Zn and ascorbic acid, the separation time was about two hours with the relative standard deviation <5 %. Analytical standards Sediment and rock samples The results obtained in this method are in good agreement with the recommended values.