核电站液态流出物中63Ni的快速分离与测定

辐射防护 ›› 2021, Vol. 41 ›› Issue (5): 404-409.

核电站液态流出物中⁶³Ni的快速分离与测定

杨有坤, 保莉, 杨海兰, 宋沁楠, 李鹏翔, 李周, 王瑞俊

中国辐射防护研究院,太原 030006

收稿日期:2020-12-22 出版日期:2021-09-20 发布日期:2021-11-26
作者简介:杨有坤(1994—),男,2016年毕业于南华大学辐射防护与环境工程专业,2019年硕士毕业于中国辐射防护研究院辐射防护及环境保护专业,研究实习员。E-mail:1216981116@qq.com

Rapid separation and determination of ⁶³Ni in liquid effluents of NPP

YANG Youkun, BAO Li, YANG Hailan, SONG Qinnan, LI Pengxiang, LI Zhou, WANG Ruijun

China Institute for Radiation Protection, Taiyuan 030006

Received:2020-12-22 Online:2021-09-20 Published:2021-11-26

摘要/Abstract

摘要： 本文通过系统调研,以Ni特效树脂为⁶³Ni分离富集材料、低本底液闪谱仪为测量仪器,经过大量条件实验进行方法优化,建立了一套核电站液态流出物中⁶³Ni的快速分析方法。本方法取样量小,6个平行样品的化学回收率为(93.2±3.6)%,放化回收率为(92.1±2.8)%,探测限为67.4 mBq/L,对干扰核素去污因子高,其中对Fe、Co、Zn、Mn的去污因子分别为10²、10⁴、10²及10⁴,分析周期短(约9 h):同时使用建立的方法进行了液态流出物样品的分析,证明本方法可应用于核电站液态流出物的快速监测,并发现不同类型反应堆运行时液态流出物中⁶³Ni的浓度可能会存在较大差异。

关键词: 液态流出物, ⁶³Ni, Ni特效树脂, 液闪计数法

Abstract: In this study, a rapid analysis method of ⁶³Ni in liquid effluents of a NPP was established by systematic investigation, using Ni specific resin as the separation and enrichment material, and low background liquid scintillation spectrometer as the measuring instrument. The recovery rate of six parallel samples was (93.2±3.6)%, and the radiochemical recovery rate was (92.1±2.8)%. The detection limit is 67.4 mBq/L, and the decontamination factors of Fe, Co, Zn and Mn are 10², 10⁴, 10² and 10⁴, respectively. The analysis period is short (less than 24 h). At the same time, the liquid effluent samples are analyzed by the established method, which proves that the method can be applied to the rapid monitoring of liquid effluents in NPP, It is found that the concentration of ⁶³Ni in liquid effluents of different types of reactors may be different.

Key words: liquid effluent, ⁶³Ni, Ni specific resin, LSC

中图分类号:

TL75+1

杨有坤, 保莉, 杨海兰, 宋沁楠, 李鹏翔, 李周, 王瑞俊. 核电站液态流出物中⁶³Ni的快速分离与测定[J]. 辐射防护, 2021, 41(5): 404-409.

YANG Youkun, BAO Li, YANG Hailan, SONG Qinnan, LI Pengxiang, LI Zhou, WANG Ruijun. Rapid separation and determination of ⁶³Ni in liquid effluents of NPP[J]. RADIATION PROTECTION, 2021, 41(5): 404-409.

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核电站液态流出物中⁶³Ni的快速分离与测定

Rapid separation and determination of ⁶³Ni in liquid effluents of NPP

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