摘要
对重庆市主城区环境空气、房地产建筑工程场地、伴生放射性矿堆场和宾馆室内空气氡浓度进行了调查。调查结果表明:主城区在12个区24个测点的环境空气中氡浓度年均值为10.8Bq/m3;房地产建筑工程场地土壤中的氡浓度按6个工地统计均值为1193Bq/m3;不同伴生矿的矿堆场周围空气中氡浓度水平差异很大,其中萤石矿最大,其次是铅锌矿;堆场周围空气中氡浓度水平按10类被调查的矿种统计平均值为65.2Bq/m3,萤石矿堆场周围空气中氡浓度平均值369Bq/m3,约是全市区域环境空气中氡浓度的35倍;8家宾馆109个客房室内氡浓度年均值为32.9Bq/m3。
Contents of radon in air in the urban district, building fields, diggings and hotel in Chongqing were investigated. Result shows that the mean concentration of radon is 10.8 Bq/m^3 in air in the urban district,and the mean concentration of radon is 1 193 Bq/m^3 in soils on building fields. Radon level is obviously different in each of diggings, with the highest being in fluorite mine and the second in plumbum and zinc mine. The statistical mean value of radon concentration of 10 typles of diggings investi- gated is 65.2 Bq/m^3, while the mean concentration of radon in fluorite mine is 369 Bq/m^3, which is 35 times higher than in the urban area. The mean concentration of radon is 32.9 Bq/m^3 in eight hotels.
出处
《辐射防护》
CAS
CSCD
北大核心
2009年第2期111-114,共4页
Radiation Protection
基金
国家环境保护部专项(项目编号:20074842)
关键词
重庆
氡浓度
调查
Chongqing, Radon Level, Investigation
