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    中国百强科技报刊

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    中国高校百佳科技期刊

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    Volume 32 Issue 4
    Jul.  2007
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    Article Contents
    WANG Nan-ping, XIAO Lei, MEI Wen-ke, HOU Sheng-li, 2007. Activated Charcoal Cumulated Adsorption Method for Measuring Radon Exhalation Rate from Soil. Earth Science, 32(4): 523-527.
    Citation: WANG Nan-ping, XIAO Lei, MEI Wen-ke, HOU Sheng-li, 2007. Activated Charcoal Cumulated Adsorption Method for Measuring Radon Exhalation Rate from Soil. Earth Science, 32(4): 523-527.

    Activated Charcoal Cumulated Adsorption Method for Measuring Radon Exhalation Rate from Soil

    • Received Date: 2007-04-12
    • Publish Date: 2007-07-25
    • We designed and developed an activated charcoal cumulated adsorption method for measuring radon exhalation rate from soil to perform rapid observation at many sites in a large area. Based on the data of measurements on the radon exhalation facility and real-time soil radon exhalation rate in the field, we studied the types of the activated charcoal and sampling device, accumulated exposure time and radon effective decay constant. We investigated the soil radon exhalation in a university yard (sandy loam) from 2002-2003. The average of radon exhalation rate is 20.15 mBq·m-2·s-1; the standard deviation is 3.55 mBq·m-2·s-1, and the variety ranges from 13.49 to 26.75 mBq·m-2·s-1. By comparison, the results of activated charcoal absorption and an equipment of electrostatic collection are coincident with each other. The results revealed that the method of activated charcoal absorption is practical, feasible and rapid for measuring the 222Rn exhalation rate from soil in the field.

       

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      Fazal-ur-Rehman, Al-Jarallah, M. I., Musazay, M. S., et al., 2003. Application of the can technique and radon gasanalyzer for radon exhalation measurements. Applied Radiation and Isotopes, 59 (5-6): 353-358. doi: 10.1016/S0969-8043(03)00196-9
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      Guo, Q. J., Cheng, J. P., 2004. Measurement of 222Rn/220Rn progeny and exhalation rates for 222Rn/220Rn from soilin Zhuhai area. Radiation Protection, 24 (2): 110-115 (in Chinese with English abstract).
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      Sun, K. N., Guo, Q. J., Cheng, J. P., 2005. The effect ofsome soil physical parameters on soil radon concentration and radon exhalationfromsoil surface. Chin. J. Radio. Med. Prot. , 25 (1): 78-80 (in Chinese with Eng-lish abstract).
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      Wang, N. P., Xiao, L., 2004. Adetailed study of indoor 222Rn level associate with 222Rn exhalation fromsedi ment andthe character of sedi ment in high-background weatheredgranite area, south China. http://www.irpa11.com/mew/pdfs/6a69pdf.
      Xiao, L., 2004. Study on a method of soil radon exhalationrate and the correlativity between soil and radon exhala-tion rate and region indoor radon concentrations [Dissertation]. China University of Geosciences, Beijing, 6-33 (in Chinese with English abstract).
      Yang, Y. X., Wu, X. M., Wu, Y. M., et al., 2002. Experi-mental research on radon exhalation with double-filtermethod. Bulletin of Science and Technology, 18 (1): 38-42 (in Chinese with English abstract).
      陈凌, 谢建伦, 黄隆, 1998. 氡面析出率的测量及相关因素的考虑. 辐射防护通讯, 18 (6): 28-36. https://www.cnki.com.cn/Article/CJFDTOTAL-DEFE806.003.htm
      付锦, 韩耀照, 张彪, 2003. 活性炭吸附法测量铀矿尾矿氡析出率. 辐射防护通讯, 23 (2): 32-35. doi: 10.3969/j.issn.1004-6356.2003.02.007
      苟全录, 张智慧, 1998. 静电收集式氡析出率仪的计算公式讨论. 原子能科学技术, 32 (5): 420-426. https://www.cnki.com.cn/Article/CJFDTOTAL-YZJS805.006.htm
      郭秋菊, 程建平, 2004. 珠海市环境空气中222Rn、220Rn子体水平及土壤析出率测量. 辐射防护, 24 (2): 110-115. doi: 10.3321/j.issn:1000-8187.2004.02.005
      任天山, 2001. 室内氡的来源, 水平和控制. 辐射防护, 21 (5): 291-299. doi: 10.3321/j.issn:1000-8187.2001.05.005
      孙凯男, 郭秋菊, 程建平, 2005. 土壤物理性质对土壤氡浓度及地表氡析出率的影响. 中华放射医学与防护杂志, 25 (1): 78-80. doi: 10.3760/cma.j.issn.0254-5098.2005.01.032
      肖磊, 2004. 土壤氡析出率测量方法及其与区域环境氡浓度相关性研究(硕士学位论文). 北京: 中国地质大学, 26-33.
      杨亚新, 吴信民, 吴雅梅, 等, 2002. 用双滤膜法测定氡析出率的实验研究. 科技通报, 18 (1): 38-42. doi: 10.3969/j.issn.1001-7119.2002.01.008
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