世界核地质科学2025，Vol.42Issue(4)：852-858,870,8.DOI:10.3969/j.issn.1672-0636.2025.04.015
基于210Bi-β计数法测定金属铅中210Pb方法研究
Study on the determination of 210Pb in metallic lead by 210Bi-β counting method
摘要
Abstract
Due to its excellent shielding properties,lead is widely used in radiation protection.However,the presence of the naturally occurring radionuclide 210Pb in lead may compromise its shielding effectiveness.Accurate determination of 210Pb specific activity is crucial for selecting low-background shielding lead materials.This study presents a method for measuring 210Pb in metallic lead based on low-background β counting of its daughter nuclide Bi.By optimizing sample pretreatment and measurement conditions,precise quantification of 210Pb in lead was achieved.Experimental results demonstrate that this method exhibits high sensitivity and accuracy,the detection limit of the method is 4.0 Bq·kg-1,and the total spiked recovery rate ranges from 97.3%to 101.4%,making it suitable for determining 210Pb levels in low-background lead.The findings provide technical support for quality control in radiation shielding materials.关键词
210Pb/210Bi/低本底β计数法/辐射屏蔽材料Key words
210Pb/210Bi/low-background β counting/radiation shielding materials分类
化学化工引用本文复制引用
肖稀然,王孝明,王蕊,田飞,王铁健..基于210Bi-β计数法测定金属铅中210Pb方法研究[J].世界核地质科学,2025,42(4):852-858,870,8.基金项目
中核集团"井下伽马能谱直接测铀技术与装备研发"项目(编号:物KB2201)资助 Supported by CNNC Development of Technology and Equipment Downhole Gamma Spectrometry for In-situ Uranium Detection(No.物KB2201) （编号:物KB2201）
