摘要
本文介绍了用 TRPO 萃取、固体荧光法测定动植物样品中铀含量的方法。用 HNO_3和 H_2O_2处理样品灰,再转化为 HNO_3体系.用 TRPO 萃取分离铀,有机相直接与 NaF 烧制熔珠。在光电荧光计上测定。该方法灵敏度为0.05μg/g(灰),全程回收率为90%,样品中的常量离子不影响分析结果。
A method for determining uranium in animal and plantsamples with TRPO extraction-solid fluorimctric measurement was reportedin this paper.The sample ash was pretreated by HNO_3 and H_2O_2,uraniumwas extracted by TRPO.Sodium fluoride tablet was dcrectly made with theorganic phase and Na,thcn uranium confents were measured with photoelectricfluorimenter.The detective limit of this method was 0.05μg/g(ash) and therecover of whole coursc was 900%.The analytical results were not influencedby the normal amounts of ions in the sample.
出处
《辐射防护》
CAS
CSCD
北大核心
1989年第2期150-155,共6页
Radiation Protection
关键词
动植物样品
铀
放射性监测
TRPO
Samples of animal and plants Uranium
TRPO
Solid fiuorimeiry
Extraction
