【摘要】 本文重点报道用CPA-Ⅰ试剂溶液与D₂₉₀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pH₁-1.5,15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。更多还原

【Abstract】 CPA-Ⅲchelate-forming resin was prepared by simply stirring a mixing solution of CPA-Ⅲagent and strongly basic anion-exchange(chloride form or phosphate form)resin with large cavity, and it was used for the separation of matrixl elements in rocks and concentration of trace amounts of rare earth in geochemical samples by column method. The fifteen rare earthelements were then determined by ICP-AES. The recoveries of rare earths were 94—106%. The time of separation and concentration by column method was about 2 h. The relative standard deviation was<5%. The results obtained in analysis of standard sediment and rock samples agreed well with the reference values.更多还原