PMBP萃取α能谱法测定大量钚中微量镅
JOURNAL OF NUCLEAR AND RADIOCHEMISTRY(2010)
Abstract
研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(PMBP)萃取HNO_3溶液中镅、钚的性能,研究了水相酸度、相比(有机相∶水相)、萃取次数、萃取剂浓度等对PMBP萃取性能的影响.实验结果表明,在酸度为2 mol/L、相比为1∶1时,0.1 mol/L PMBP-二甲苯对分析样品进行一次萃取一次洗涤即能有效的分离大量钚,满足α能谱对微量镅的测定.该方法钚与镅的分离系数约为10~6,在C(Pu)/C(Am)≥10~6时对Am的相对偏差不大于8%.
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Key words
PMBP,Am,Pu,separation coefficient
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