二(2,4,4-三甲基戊基)二硫代膦酸从不同水相介质中萃取示踪量的镅和铕  

Extraction of Am^(3+) and Eu^(3+) From Different Aqueous Media by Bis(2,4,4-Trimethyl) Dithio Phosphinic Acid

作　　者：彭燕斌[1] 陈靖[1] 

机构地区：[1]清华大学核能与新能源技术设计研究院,北京102201

出　　处：《核化学与放射化学》2006年第3期178-182,共5页Journal of Nuclear and Radiochemistry

摘　　要：研究了二(2,4,4-三甲基戊基)二硫代膦酸(HBTMPDTP)/正十二烷对不同水相介质中示踪量Am3+和Eu3+的萃取性能。结果表明,在水相介质为LiNO3,NaNO3,KNO3的体系中,3种阳离子Li+,Na+,K+对萃取没有显著影响;在水相介质为NaNO3,Na2SO4,NaClO4,NaCl,NaBr的体系中,不同阴离子对Am3+和Eu3+的萃取有一定影响。在水相介质为LiNO3,NaNO3,KNO3,NaCl,NaBr的体系中,分离因数均达到103以上,对Am3+和Eu3+有良好的分离效果;而在Na2SO4和NaClO4体系中,分离因数只有50和500左右,分离效果相对较差。The extraction of tracer amount of Am^3＋ and Eu^3＋ from different aqueous media by bis（2,4,4-trimethyl） dithio phosphinic acid（HBTMPDTP）/n-dodecane was studied. The results show that in the solutions of LiNO3, NaNO3 or KNO3, the different cations show no remarkable effect on the extraction of Am^3＋ and Eu^3＋ ; in the aqueous solutions containing NaNO3, Na2SO4, NaClO4, NaCl or NaBr, the different anions affect the extraction of Am^3＋ from Eu^3＋ and their separation to some extent. In the solutions of LiNO3, NaNO3, KNO3, NaCl or NaBr, HBTMPDTP has a good ability to separate Am^3＋ from Eu^3＋ with a separation factor that is more than 10^3. Lower separation factor of about 50 and 500 are obtained in Na2SO4 and NaClO4 aqueous solutions, respectively.

关 键 词：镅 铕 萃取 HBTMPDTP 分离因数 

分 类 号：O614.354[理学—无机化学]