摘要
甲基异丁基酮(MIBK)兼有溶剂及中性萃取剂的加合作用,作为溶剂能提高硝酸季铵萃取铕(Ⅲ)、钆(Ⅲ)的分离效果。水相中的盐析剂对分离因数影响较大,在1M 的 Mg(NO_2)_2介质中,铕(Ⅲ)与钆(Ⅲ)问的分离因数可达1.90。MIBK 溶剂体系克服了芳烃熔剂有毒的缺点,消除了季铵盐在烷烃溶剂中易乳化的现象,可获得比中性磷型加合剂更佳的分离效果。
The separation of europium(Ⅲ)and gadolini-um(Ⅲ)on extraction with quaternary ammoniumnitrate is increased by the application of methyl-isobutyl ketone as solvent due to its neutral sol-eating effect The separation coefficient,areinfluenced considerably by the concentration ofnitrates in the aqueous phase.A 1.9 separationcoefficient between Eu(Ⅲ)and Gd(Ⅲ)is attainedin 1M Mg(NO_3),solution By the applicationof MIBK as solvent the health injury inextraction by aromatic solvents is reduced andthe emulsification and homogenization of qua-ternary ammonium nitrate in alkyl solvents disap-pear while separation coefficients are better thanthose using a neutral phosphorous soivatingagent
出处
《化学试剂》
CAS
CSCD
北大核心
1990年第2期114-117,共4页
Chemical Reagents
