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

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。

Extraction of Am3+ and Eu3+ From Different Aqueous Media by Bis(2,4,4-Trimethyl) Dithio Phosphinic Acid

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 LiNO_(3),NaNO_(3) or KNO_(3),the different cations show no remarkable effect on the extraction of Am~(3 ) and Eu~(3 );in the aqueous solutions containing NaNO_(3),Na_(2)SO_(4),NaClO_(4),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 LiNO_(3),NaNO_(3),KNO_(3),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 Na_(2)SO_(4) and NaClO_(4) aqueous solutions,respectively.