5,7─二溴─8─羟基喹啉与含N协配体对镅和铕的萃取研究  

EXTRACTION OF Am 3+ AND Eu 3+ WITH 5,7 DIBROMO 8 QUINOLINOL AND SOME N SYNERGIC LIGANDS

作　　者：刘德敏[1] 刘翔峰[1] 杨裕生[1] 

机构地区：[1]西北核技术研究所

出　　处：《核化学与放射化学》1997年第3期12-17,共6页Journal of Nuclear and Radiochemistry

摘　　要：研究了在实验温度为２５℃，水相为硝酸介质，离子强度为０．１ｍｏｌ／ｋｇ，氯仿为稀释剂时，５，７－二溴－８－羟基喹啉单独萃取及其与２，２′－联吡啶、２，９－二甲基－１，１０－啡绕啉、４，７－二苯基－１，１０－啡绕啉对三价镅和铕的协同萃取。结果表明：５，７－二溴－８－二羟基喹啉对镅的萃取能力略高于铕，分离因数βＡｍ／Ｅｕ为１．２９；３种协萃剂的协萃能力依次为：４，７－二苯基－１，１０－啡绕啉＞２，２′－联吡啶＞２，９－二甲基－１，１０－啡绕啉，相应的分离因数βＡｍ／Ｅｕ分别为：１０．８０、１．６２和０．４９。The extraction behaviors of Am 3+ and Eu 3+ from nitrate medium with 5,7 dibromo 8 quinolinol in chloroform at 25℃ are studied.The synergetic effects of 5,7 dibromo 8 quinolinol with 2,2 ′ bipyridine,2,9 dimethyl 1,10 phenanthroline and 4,7 diphenanthroline are also studied. The results show that in single extracting system of 5,7 dibromo 8 quinolinol the separation factor for Am and Eu is 1 29;in the synergetic systems of 5,7 dibromo 8 quinolinol with 2,2 ′ bipyridine,5,7 dibromo 8 quinolinol with 2,9 dimethyl 1,10 phenanthroline and 5,7 dibromo 8 quinolinol with 4,7 diphenanthroline,the separation factors are 1 62、0 49 and 10 8,respectively.

关 键 词：镅 铕 羟基喹啉 萃取 二溴 HA 

分 类 号：O614.338[理学—无机化学] O614.354[理学—化学]