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| THE CORRELATION BETWEEN INDOOR RADON CONCENTRATIONS AND GEOLOGICAL BACKGROUNDS IN SOME TYPICAL AREAS OF BEIJING AND GUANGDONG |
| QIN Chun-yan1,2, WANG Nan-ping1,2, XIAO Lei1,2, CHU Xing-ming1,2 |
1. School of Geophysics and Geoinformation Technology, China University of Geosciences, Beijing 100083, China;
2. Geo-detection Laboratory, Ministry of Education, China University of Geosciences, Beijing 100083, China |
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Abstract For the purpose of studying the indoor radon level under different geological backgrounds, the authors measured indoor radon concentrations by pulse chamber radon monitor AlphaGUARD in some typical areas of Guangdong and Beijing, and also made long-term monitoring of indoor radon concentrations at a measuring site in Guangdong. The results show that surface lithology is one of the most important factors affecting indoor radon. The indoor radon in the granite area is higher than that in other lithologic areas, and the level of indoor radon in Guangdong is apparently higher than that in Beijing. The average concentrations of indoor radon in Guangdong and Beijing are respectively 69.98 Bq/m3 and 43.97 Bq/m3 for granite area, and 43.60 Bq/m3,35.74 Bq/m3 for Quaternary area. The level of indoor radon in the residence is slightly higher than that in office buildings and restaurants. The study of the distribution and level of indoor radon in combination with geological background is of guiding significance for the selection of the indoor radon survey points and also has important practical value for regional scale indoor radon evaluation.
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Received: 04 July 2011
Published: 10 June 2012
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