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稀土元素是我国的丰产元素之一,单一稀土元素的分离与分析是个很重要的课题。本文在文献的工作基础上,进一步对原有展开剂体系作了研究,提出用P_(204)-P_(507)-TBP体系作为展开剂,分离了十五个稀土元素,在本文实验条件下,各个稀土元素的R_f值都适中(0.1—0.7),相邻元素间的R_8值都大于1.2,同时对混合稀土样品作了测试,结果令人满意。
REE is one of the most productive elements in China. The separation and analysis of single rare earth elements is a very important issue. Based on the work of the literature, this paper further studied the original developing agent system, and proposed the use of P_ (204) -P_ (507) -TBP system as a developing agent, isolated fifteen rare earth elements, in this experimental conditions , All rare earth elements R_f values are moderate (0.1-0.7), R_8 values between adjacent elements are greater than 1.2, while mixed rare earth samples were tested, the results are satisfactory.