太原市居民室内氡水平抽样调查与所致剂量估算

目的了解室内空气中氡的本底水平,找出氡的不同来源对室内的相对贡献。方法 REM-2型氡析出率仪对地面和墙壁表面进行氡析出的测量,利用FD-125氡钍分析仪对室内用水和煤气中氡的含量作了分析,探讨了太原市居室内空气中氡本底水平。结果室内氡主要是由土壤、建材中析出的,其次才是室外空气中氡的渗入,室内用水和煤气中氡贡献很小。结论根据调查结果,进行室内空气中氡对人体健康危害分析和剂量评价,建立了室内氡本底水平的数据库,为以后研究室内氡的防护措施提供了依据。

Samples of Indoor Radon Radioactive Contamination in Taiyuan City and Dosage Estimation

Objective To find the background atmospheric radon level and relative attribution of indoor radioactive contamination from different sources.Methods REM-2 Radon Emission Apparatus was used to measure radon emitted from ground and wall surface.FD-125 Rn-Th Analyzed was used to investigate the radon level in water and coal gas.Results Results indicated that the radioactive contamination mostly emitted from soil and building material.The other part was from outdoor atmosphere.Very little was from water and coal gas.Conclusions From the results of samples,the database for indoor radon background was set up providing criteria for protective measure might be taken in the future.