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几种常用土壤氡浓度测量技术分析

384    2020-09-17

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作者:阮菊红1, 丁卫撑1, 于兵2, 颜国旭1, 李佳俊1, 陈文秀1, 李姝彬1, 何田1, 徐尉富1

作者单位:1. 成都理工大学 地学应用核技术四川省重点实验室,四川 成都 610059;
2. 中国测试技术研究院,四川 成都 610021


关键词:氡气;α能谱;总量测量;累积测量;瞬时测量


摘要:

土壤测氡广泛应用于环境评价、地质构造勘查和资源勘查等领域。首先,该文结合实际工程的应用分析土壤氡浓度特征及土壤中氡浓度测量技术需求特点,对现有土壤氡气测量技术进行简要分析。然后,重点介绍α杯法土壤测氡技术、泵吸式α能谱土壤测氡技术、RaA土壤测氡技术工作原理,并详细分析其各自优缺点。最后,通过测试对比实验数据,验证α杯法土壤测氡技术具有反应弱异常能力,对土壤氡异常信息具有重现性和多台仪器测量数据一致性的优点,也验证土壤中氡气累积测量方法准确性优于瞬时测量方法。该文工作对从事土壤中氡气测量工作人员合理选用测量方法和正确使用相应的测量仪器具有参考意义。


Technical requirements and comparative analysis of measuring methods for radon content in soil
RUAN Juhong1, DING Weicheng1, YU Bing2, YAN Guoxu1, LI Jiajun1, CHEN Wenxiu1, LI Shubin1, HE Tian1, XU Weifu1
1. Key Laboratory of Applied Nuclear Technology in Geosciences, Chengdu University of Technology, Chengdu 610059, China;
2. National Institute of Measurement and Testing Technolohy, Chengdu 610021, China
Abstract: Soil radon measurement is widely used in the fields of environmental assessment, geological structure exploration and resource exploration. First, after analyzing the characteristics of soil radon concentration and the characteristics of demand for measurement techniques of radon concentration in soil in combination with the application of actual engineering, a brief analysis of existing soil radon measurement techniques is carried out. Then the paper introduces the working principle of α cup method soil measurement radon technology, pumping type α spectrum soil measurement radon technology and RaA soil measurement radon technology, and analysis advantages and disadvantages in details. Finally, through testing and comparing the experimental data, verifying the α cup method soil measurement radon technology has the ability to respond to weak anomalies, has the advantages of reproducibility of soil radon anomaly information and the consistency of the measurement data of multiple instruments, and verifies the radon in the soil the accuracy of the cumulative measurement is better than instantaneous measurement method. This article has certain reference significance for the workers who are engaged in soil radon measurement to choose the measurement method reasonably and use the corresponding measuring instruments correctly.
Keywords: radon;alpha spectrum;total measurement;cumulative measurement;instantaneous measurement
2020, 46(8):1-6  收稿日期: 2020-03-21;收到修改稿日期: 2020-05-07
基金项目: 国家自然科学基金项目(41774140);四川省科技计划项目(2020JDRC0168)
作者简介: 阮菊红(1980-),女,浙江台州市人,硕士,主要从事氡气测量资源情报研究工作
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