Robredo L M, Navarro T, Sierra I
CIEMAT, Internal Dosimetry, Madrid, Spain.
Appl Radiat Isot. 2000 Jul-Aug;53(1-2):345-50. doi: 10.1016/s0969-8043(00)00151-2.
The experimental procedure used for the indirect measurement of internal exposure of workers involved in the first step of the decontamination of a nuclear power plant which is being decommissioned is presented. The establishment of decontamination and decommissioning programs is currently in progress at the nuclear power plant and monitoring procedures to assess workers' exposure have also been implemented. Due to the presence of transuranics, the monitoring program includes the analysis of excreta samples. An analytical method for the determination of plutonium (Pu) and americum (Am) in urine samples was developed. The radiochemical separation is based on the coprecipitation of transuranics and sequential isolation of Pu and Am by anion exchange and extraction chromatography. Finally, electrodeposited sources are prepared and counted by alpha-spectrometry.
介绍了用于间接测量参与正在退役的核电站去污第一步工作的工人内部暴露情况的实验程序。该核电站目前正在制定去污和退役计划，同时也已实施评估工人暴露情况的监测程序。由于存在超铀元素，监测计划包括对排泄物样本的分析。开发了一种用于测定尿样中钚（Pu）和镅（Am）的分析方法。放射化学分离基于超铀元素的共沉淀以及通过阴离子交换和萃取色谱法对钚和镅的顺序分离。最后，制备电沉积源并通过α能谱法进行计数。
