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本文报告了二(2-乙基己基)磷酸(HDEHP)为固定相二乙撑三胺五醋酸(DTPA)和乳酸为淋洗剂分离克量锕系和镧系元素的萃取色层法。研究了锕系和镧系元素共吸附时,硝酸浓度和硝酸铝浓度的影响。比较了几种支持体的性能。并研究了DTPA-乳酸溶液分离这两族元素时,氢离子浓度,流速和温度的影响。本文提出的工艺条件曾成功地应用于几百毫克镅锔和几十毫克稀土元素之间的分离。
In this paper, an extraction chromatography method for the separation of actinides and lanthanides from bis (2-ethylhexyl) phosphoric acid (HDEHP) as stationary phase diethylenetriaminepentaacetic acid (DTPA) and lactic acid as eluent was reported. The effects of nitric acid concentration and aluminum nitrate concentration on the co-adsorption of actinides and lanthanides were investigated. Compare the performance of several supporters. The effects of hydrogen ion concentration, flow rate and temperature on the separation of these two groups of DTPA-lactic acid solutions were also studied. The process conditions proposed in this paper have been successfully applied to the separation of hundreds of milligrams of 镅 锔 and tens of milligrams of rare earth elements.