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我们曾用Cu~(2+)、Cd~(2+)选择电极指示微量钆的EDTA络合反滴定,结果较为满意。镅与钆的化学性质相似,可以用同样方法测定镅。根据我们过去的工作,在镅的络合滴定中选用DTPA(Diethylenetria-minepentaacetic acid,二乙撑三胺五乙酸)作络合剂比用EDTA好,所以本文选用DTPA,并使用Cd~(2+)作为DTPA的反滴定剂。本法操作简单、安全,工作人员所受放射性辐射剂量较目视络合滴定法为少。对于380微克镅的测定,准确度和精
We have used Cu ~ (2 +), Cd ~ (2 +) selective electrode trace EDTA complex titration of gadolinium titration, the results are satisfactory.化 with similar chemical properties of gadolinium, you can use the same method of determination 镅. According to our past work, we chose DTPA (Diethylenetria-minepentaacetic acid) as the complexing agent in the complexation titration of 镅, which is better than EDTA. Therefore, ) As a DTPA counter-titrant. This method is simple and safe to operate. The dose of radioactive radiation received by staff is less than that of visual complexometric titration. For the determination of 380 micrograms 镅, accuracy and precision