液体闪烁法直接测量废水中的总α/β放射性

辐射防护 ›› 2025, Vol. 45 ›› Issue (5): 496-502.

液体闪烁法直接测量废水中的总α/β放射性

王瑞俊¹, 保莉¹, 陈凌², 任晓娜¹, 刘王东¹, 师琦琦¹, 崔临红¹

1.中国辐射防护研究院,太原 030006;
2.中国原子能科学研究院,北京 102413

收稿日期:2024-02-27 出版日期:2025-09-20 发布日期:2026-01-14
作者简介:王瑞俊(1983—),男,2004年毕业于四川大学核物理专业,2012年毕业于中国辐射防护研究院辐射防护及环境保护专业,获硕士学位,研究员。E-mail:wang.ruijun@163.com

Direct measurement of gross α/β in wastewater by liquid scintillation method

WANG Ruijun¹, BAO Li ¹, CHEN Ling², REN Xiaona¹, LIU Wangdong¹, SHI Qiqi¹, CUI Linhong¹

1. China Institute for Radiation Protection, Taiyuan 030006;
2. China Academy of Atomic Energy, Beijing 102413

Received:2024-02-27 Online:2025-09-20 Published:2026-01-14

摘要/Abstract

摘要： 废水中总放射性含量较高时,可采用具有α/β甄别功能的液闪谱仪直接测量总放射性,具有流程简便、本底低、计数效率高的突出优点,且可以结合液闪计数谱图对结果进行分析。采用液体闪烁法直接测量废水中的总α、总β活度浓度,并对测量结果进行了对比分析。该批次废水样品中总β的主要贡献核素为⁹⁰Sr,总β活度浓度比总α高3个数量级,液体闪烁法与流气式正比计数法测量得到的总α、总β结果的相对偏差分别为2.2%~22.5%和2.3%~16.7%,平行性较好。

关键词: 液体闪烁法, 总α放射性, 总β放射性, 废水

Abstract: When gross α/β in wastewater is high, liquid scintillation spectrometer with α/β discrimination function can be used to directly determine gross α/β, which has the outstanding advantages of simple process, low background and high counting efficiency, and the result can be analyze by considering the liquid scintillation count spectrum. In this paper, the concentration of gross α/β activity in wastewater was directly determined by LSC, and the results were compared and analyzed. The main contributing nuclide of gross β in this batch of wastewater samples is ⁹⁰Sr, and the activity concentration of gross β is three orders of magnitude higher than that of gross α. The relative deviations of gross α and gross β measured by liquid scintillation method and gas-flow proportional counting method are 2.2%-22.5% and 2.3%-16.7%, respectively, and the correlation is good.

Key words: LSC, gross α, gross β, wastewater

中图分类号:

X837

王瑞俊, 保莉, 陈凌, 任晓娜, 刘王东, 师琦琦, 崔临红. 液体闪烁法直接测量废水中的总α/β放射性[J]. 辐射防护, 2025, 45(5): 496-502.

WANG Ruijun, BAO Li , CHEN Ling, REN Xiaona, LIU Wangdong, SHI Qiqi, CUI Linhong. Direct measurement of gross α/β in wastewater by liquid scintillation method[J]. RADIATION PROTECTION, 2025, 45(5): 496-502.

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