溢流式驻极体水氡浓度测量方法与装置

针对目前国内水氡浓度“原样”测量面临的困难,本研究提出一种溢流式驻极体水氡浓度测量方法与装置,采用 E-perm驻极体与离子腔组合形成电离腔作为氡探测器,将稳定含氡水流以固定流量 缓慢流经4L扩散腔,底部采用固定流量氮气流强化曝气,水中氡在氮气扰动下进入缓冲罐混合,将 驻极体悬挂于4L玻璃罐中部,采用驻极体测量罐子中气体氡浓度方式测量连续水流平均氡浓度,同时采用了RAD7-H20套件对水中浓度对比测量. 结果显示,水氡浓度 4-97Bq/L范围内三种方法 -致性良好....

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Bibliographic Details
Published in同位素 Vol. 29; no. 4; pp. 241 - 247
Main Author 张辉 邓君 徐乐昌 李先杰
Format Journal Article
LanguageChinese
Published 核工业北京化工冶金研究院 北京 101149%中国疾病预防控制中心 辐射防护与核安全医学所 北京 100088 2016
Subjects
水氡
辐射防护
驻极体
水氡
辐射防护
electret
radiation protection
radon in water
驻极体
Online AccessGet full text
ISSN1000-7512
DOI10.7538/tws.2016.29.04.0241

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Summary:针对目前国内水氡浓度“原样”测量面临的困难,本研究提出一种溢流式驻极体水氡浓度测量方法与装置,采用 E-perm驻极体与离子腔组合形成电离腔作为氡探测器,将稳定含氡水流以固定流量 缓慢流经4L扩散腔,底部采用固定流量氮气流强化曝气,水中氡在氮气扰动下进入缓冲罐混合,将 驻极体悬挂于4L玻璃罐中部,采用驻极体测量罐子中气体氡浓度方式测量连续水流平均氡浓度,同时采用了RAD7-H20套件对水中浓度对比测量. 结果显示,水氡浓度 4-97Bq/L范围内三种方法 -致性良好.
Bibliography:11-2566/TL
To solve the difficulties in “original” radon concentration measuring, this paper proposed an overflow type electret radon concentration measurement method and device. A 4 L jar was applied as ionization chamber and E-perm electret was applied as radon detector. When the steady radon contaminated water flowed through the ioniza-tion chamber, water radon was released with the nitrogen aerating disturbance. The average radon concentration was detected by the E-perm electret. Furthermore, RAD7- H20 kit was used to measure the radon concentration for comparison. The results showed that different methods had well consistency with the water radon concentration in the range of 4 to 97 Bq/L.
electret; radon in water ; radiation protection
ZHANG Hui1 ,DENG Jun2 ,XU Le-chang1 ,LI Xian-jie1 （1. Beijing Research Institute of Chemical Engineering and Metallurgy , Beijing 101149, China ;2. National Institute for Radiological Protection , China CDC , Beijing 100088 , China）
ISSN:1000-7512
DOI:10.7538/tws.2016.29.04.0241