北京地区浅层土壤氡浓度的垂向分布特征

辐射防护 ›› 2018, Vol. 38 ›› Issue (4): 275-280.

北京地区浅层土壤氡浓度的垂向分布特征

杨志杰, 赵荣, 王南萍

中国地质大学(北京)地球物理与信息技术学院,北京 100083

收稿日期:2017-05-03 出版日期:2018-07-20 发布日期:2020-07-28
通讯作者: 王南萍。E-mail:npwang@cugb.edu.cn
作者简介:杨志杰(1990—),男,中国地质大学(北京)地球物理与信息技术学院地球探测与信息技术专业博士研究生。E-mail: yangzj_nim@126.com
基金资助:
教育部高等学校博士学科点专项基金(20120022110011)。

Measurement of radon concentration in shallow soil in Beijing area

YANG Zhijie, ZHAO Rong, WANG Nanping

School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083

Received:2017-05-03 Online:2018-07-20 Published:2020-07-28

摘要/Abstract

摘要： 为了研究北京地区浅层土壤氡浓度随深度变化的关系,利用RAD7电子测氡仪对北京市通州区、丰台区、门头沟区和延庆县的9个测点进行了野外现场测量并采集了土壤样品。测量了各测点浅层深度20、40、60、80和100 cm处的土壤氡浓度,使用室内高纯锗γ能谱仪对采集的样品进行土壤中镭含量分析。通过分析得出,在浅层深度(0～100 cm)范围内土壤氡浓度随土壤深度的增加呈现上升的趋势,土壤氡浓度与土壤样品镭含量之间趋于正相关关系;对比砂质土壤和粘质土壤氡浓度,得出在土壤镭含量水平相当的情况下,粘质土壤氡浓度比砂质土壤氡浓度高。

关键词: 土壤氡浓度, 镭含量, 深度变化, 土壤质地

Abstract: In order to study the relationship between the radon concentration and the depth of shallow soil in Beijing area, field survey of soil using RAD7 electronic radon monitor has been performed along with collection of soil samples. The survey of 9 sample sites was carried out in Tongzhou Distirct, Fengtai District, Mentougou district and Yanqing County, respectively. The soil radon concentrations at 20 cm, 40 cm, 60 cm, 80 cm and 100 cm depth were measured and the radium specific activities of the collected samples were analyzed with indoor HPGe γ spectrometer. The results showed that the concentration of soil radon increased with the increase of soil depth in shallow soil, and there was a positive correlation between soil radon concentration and specific activity of radium in soil samples. Compared with the radon concentration in the sandy soil , the concentration of radon in the clayey soil is higher.

Key words: soil radon concentration, radium specific activity, depth change, soil texture

中图分类号:

P631.6+22

杨志杰, 赵荣, 王南萍. 北京地区浅层土壤氡浓度的垂向分布特征[J]. 辐射防护, 2018, 38(4): 275-280.

YANG Zhijie, ZHAO Rong, WANG Nanping. Measurement of radon concentration in shallow soil in Beijing area[J]. RADIATION PROTECTION, 2018, 38(4): 275-280.

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