TEVA-UTEVA萃取色层分离后处理铀产品中镎的方法研究  

Separation Method of Neptunium From Reprocessed Uranium by TEVA-UTEVA Extraction Chromatography Column

作　　者：苏玉兰[1] 金花[1] 应浙聪[1] 赵胜洋[1] 徐琛[2] 

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《原子能科学技术》2014年第5期786-791,共6页Atomic Energy Science and Technology

摘　　要：本文建立了有效、定量分离后处理铀产品中镎的方法。该方法采用TEVA-UTEVA萃取色层分离后处理铀产品中的微量镎,先将镎调至四价后过TEVA萃取色层柱,再用2mol/L HNO3-0.2mol/L H2C2O4解吸吸附在TEVA树脂上的镎,最后将镎解吸液稀释后过UTEVA萃取色层柱进一步分离。结果表明,镎的平均全程回收率约为94%,铀的去污因子>104。An efficient and quantitative extraction chromatographic method using commercially available TEVA resin and UTEVA resin was developed for the separation of neptunium from reprocessed uranium .Before the sample was loaded onto TEVA column ,neptunium was adjusted to Np （Ⅳ ） ,and then the eluent of 2 mol/L HNO3-0.2 mol/L H2 C2 O4 was loaded to elute the neptunium ,the uranium in eluent after diluting was retained on UTEVA resin ,while Np（Ⅳ） was stripped from the resin .The average recovery of neptunium of the w hole separation procedure is about 94% and the decontamination coefficient of uranium is more than 10^4 .

关 键 词：铀产品 镎 TEVA-UTEVA萃取色层法 分离 

分 类 号：TL274[核科学技术—核燃料循环与材料]