液体闪烁法直接测量废水中的总α/β放射性

Abstract

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

CLC Number:

X837

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.

References

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

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