【摘要】 目的了解崇明县室内外氡浓度水平并估算其所致公众的受照剂量。方法根据2010年全国人口普查崇明县乡镇人口比例、房屋建筑类型、建筑年代和主体建筑材料等对测量样本进行分类选择。使用美国Durridge公司制造RAD7型电子氡气检测仪对室内外氡进行测量,数据采用SPSS 17.0软件进行统计分析。结果本次调查的室内222Rn浓度范围为5.75~195.29 Bq/m3,平均浓度为(25.76±2.07)Bq/m3。约有73.89%的房屋内氡浓度低于40 Bq/m3。室外222Rn浓度的范围为5.70~19.32 Bq/m3,平均浓度为(9.92±1.43)Bq/m3。结论本次调查的崇明县室内氡浓度均未超过国家推荐的控制限值。崇明县居民吸入氡所致人年均有效剂量为0.74 m Sv。更多还原

【Abstract】 Objective To investigate the outdoor and indoor radon levels and estimate its effective doses to residents. Methods Selected and classified the samples to be tested based on the data of National Population Census 2010 about Chongming population proportion,building types,construction time and materials,et. al. The samples were tested for indoor and outdoor radon concentrations using the RAD7 Electronic Radon Detector. The results were statistically processed and analyzed with SPSS 17. 0 software. Results The indoor222 Rn concentration was from 5. 75 Bq / m3 to 195. 29 Bq / m3,with the average value( Bq/m3) of 25. 76 ± 2. 07. About 73. 89% of indoor radon concentrations were below 40 Bq/m3. Outdoor222 Rn concentrations were between 5. 70 Bq / m3 and 19. 32 Bq / m3,with the average value( Bq/m3) of 9. 92 ± 1. 43. Conclusion The results showed that the indoor radon concentrations in Chongming were within the recommended control limit of the national standard. The average annual inhaled effective dose of radon by residents was 0. 74 m Sv.更多还原