| XIAO Lei,WANG Nan-ping,LI Can-ping,et al.Indoor radon level and distribution characteristic in Zhuhai city[J].Chinese Journal of Radiological Medicine and Protection,2013,33(2):170-173 |
| Indoor radon level and distribution characteristic in Zhuhai city |
| Received:April 19, 2012 |
| DOI：10.3760/cma.j.issn.0254-5098.2013.02.015 |
| KeyWords:Indoor radon concentration Activated charcoal adsorption method Geological background |
| FundProject:国家自然科学基金(40174096,40274043) |
| Author Name | Affiliation | E-mail | | XIAO Lei | School of Geophysics and Information Technology, China University of Geosciences (Beijing) and Geo-detection Laboratory, Ministry of Education, Beijing 100083, China | | | WANG Nan-ping | School of Geophysics and Information Technology, China University of Geosciences (Beijing) and Geo-detection Laboratory, Ministry of Education, Beijing 100083, China | npwang@cugb.edu.cn | | LI Can-ping | School of Geophysics and Information Technology, China University of Geosciences (Beijing) and Geo-detection Laboratory, Ministry of Education, Beijing 100083, China | | | ZENG Li-hui | School of Geophysics and Information Technology, China University of Geosciences (Beijing) and Geo-detection Laboratory, Ministry of Education, Beijing 100083, China | |
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| Abstract:: |
| Objective To analyze the indoor radon level and distribution characteristic in different geological background by studying the indoor radon level in three typical areas in Zhuhai City. Methods The region of investigation includes three districts: granite area in Zhuhai District, granite area in Doumen District and the Quaternary sedimentary area in Doumen District. Activated charcoal adsorption method was used to measure the indoor radon concentrations. In some sampling sites, solid state nuclear track detectors were used at the same time for the indoor radon measurement. Results The average indoor radon level included 80 buildings was (66.0±49.8) Bq/m3 using activated charcoal adsorption method and the maximum value was 1078.5 Bq/m3. The results of 23 sampling sites show that the average indoor radon level using solid state nuclear track detectors was (88.8±49.1) Bq/m3, and (69.5±37.7) Bq/m3by activated charcoal adsorption method. The indoor radon concentration was (73.6± 61.0), (87.5±58.3) and (48.6±22.6) Bq/m3 in granite area in Zhuhai District, granite area in Doumen District and the Quaternary sedimentary area in Doumen District, respectively. Conclusions The surface lithology of an area has a certain impact on the indoor radon level. The indoor radon level in granite area in Zhuhai District and Doumen District is apparently higher than that in the Quaternary sedimentary area in Doumen District. The study of indoor radon level and distribution characteristic should be discussed in combination with geological background of area. |
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