摘要
用放射化学法对U,Th,^(226)Ra等核素进行联合测定,国外已有不少报道,只是所用的分离方法和所测的介质不同而已。我国学者也做过一些这方面的工作。本工作建立了用三正辛胺-二甲苯萃取分离法对沉积物和生物样中U,Th和^(226)Ra的联合测定方法。 二。
A radiochemical method for simultaneous determination of U, Th and (228)Ra in sediments and biomass was investigated. The sensitivities of the method were 10(-6)g for U and Th and 17.7Bq/kg for (226)Ra respectively. Radiochemical recovery of (226)Ra was 81.7%, while chemical recovery of Ba was 90.7%. The decontamination of the method was satisfactory.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1989年第2期243-248,共6页
Acta Scientiae Circumstantiae
关键词
沉淀物
生物
U
TH
^226RA
radiochemical method
sediment
biomass
U
Th
(226)Ra.
