云南省某矿区氡浓度水平调查分析  

Investigation and analysis of radon concentration in a mining area in Yunnan Province

作　　者：孙璐 王小春[3] 潘艳[1] 崔宏星[1] 武云云[1] 刘建香[1] SUN Lu;WANG Xiaochun;PAN Yan;CUI Hongxing;WU Yunyun;LIU Jianxiang(Key Laboratory of Radiological Protection and Nuclear Emergency,China CDC,National Institute for Radiological Protection,Chinese Center for Disease Control and Prevention,Beijing 100088 China;Liaoning Center for Disease Prevention and Control;The Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry)

机构地区：[1]中国疾病预防控制中心辐射防护与核安全医学所辐射防护与核应急中国疾病预防控制中心重点实验室,北京100088 [2]辽宁省疾病预防控制中心 [3]北京市化工职业病防治院

出　　处：《中国辐射卫生》2020年第1期57-60,共4页Chinese Journal of Radiological Health

摘　　要：目的调查云南省某锡矿、铜矿及非矿区居室内空气中的氡浓度以及相应采样点自来水中氡浓度,估算人体受照剂量。方法径迹法测量锡矿、铜矿井下、地上工作场所空气中的氡浓度,使用RAD7仪器连续测量法测得居室内空气中氡浓度、RAD7水氡测量系统测量自来水氡浓度。评估不同来源氡所致受照剂量的贡献。结果锡矿的矿下、地上工作场所空气平均氡浓度分别为(7 473±3 105)Bq·m-3和(332±238)Bq·m-3,其所致年剂量贡献分别为(29.44±12.23)mSv和(2.50±1.79)mSv;铜矿井下、地上工作场所空气中氡浓度分别为(4 477±5 152)Bq·m-3和(110±32)Bq·m-3,其所致年剂量贡献分别为(17.64±20.30)mSv和(0.83±0.24)mSv;居室空气氡浓度(76±33)Bq·m-3及年剂量贡献(2.01±0.87)mSv。铜矿及锡矿的自来水氡浓度测量结果分别为(1.66±2.00)Bq·L-1和(3.94±1.81)Bq·L-1,高于市内32个采样点自来水氡浓度(0.39±0.21)Bq·L-1。结论目前所测区域水氡所致剂量贡献相对较小,锡矿、铜矿区井下工作场所空气氡浓度值得关注,应重视对矿工使用防护用具的宣传教育工作。Objective To investigate the radon concentration in the indoor air and tap water of a tin mine, a copper mine and a non-mining area in Yunnan Province, and to estimate the human exposure dose caused by radon. Methods Radon concentrations in underground and above-ground workplace air of tin and copper mines were measured by Track method,radon concentration in indoor air and radon concentration in tap water were measured by RAD7 continuous measurement method. The contribution of different radon doses was evaluated. Results The average radon concentrations in the underground and above ground workplaces air of tin mine are(7 473 ± 3 105) Bq·m-3 and(332 ± 238) Bq·m-3 respectively, and the annual dose contributions are(29.44 ± 12.23) mSv and(2.50 ± 1.79) mSv correspondingly;the radon concentrations in the air of the underground and above ground workplaces of copper mine are(4 477 ± 5 152) Bq·m-3 and(110 ± 32) Bq·m-3 respectively, and the annual dose contribution is(17.64 ± 20.30) mSv and(0.83 ± 0.24) mSv correspondingly;and the radon concentration in indoor air(76 ± 33) Bq·m-3 and the annual dose contribution(2.01 ± 0.87) mSv. The radon concentrations in tap water of copper mine and tin mine are(1.66 ± 2.00) Bq·L-1 and(3.94 ± 1.81) Bq·L-1 respectively, higher than the value of(0.39 ± 0.21) Bq·L-1 in tap water of 32 sampling points in the city. Conclusion The dose contribution caused by radon in water is relatively small, the concentration of radon in the underground workplace of tin and copper mine is worthy of attention. Attention should be paid to publicizing and education of use of protective equipment for miners.

关 键 词：氡浓度 水氡 剂量贡献 

分 类 号：X591[环境科学与工程—环境工程]