A new sampler for simulating aerosol deposition in the respiratory tract  

作　　者：LI Dehong ZHUO Weihai YI Yanling CHEN Bo LIU Haikuan 

机构地区：[1]Institute of Radiation Medicine, Fudan University, Shanghai 200032, China

出　　处：《Nuclear Science and Techniques》2008年第3期169-173,共5页核技术（英文）

基　　金：the National Natural Science Foundation of China (Grant No.10575023)

摘　　要：For estimation of the deposition fractions of radon progeny in different regions of the respiratory tract, a new sampler consisting of three different configurations of sampling heads was developed. The deposition fractions of aerosols on the wire screens inside the sampling heads were calculated with the fan model of filtration theory. The deposition fractions of aerosols in different regions of the respiratory tract were calculated with the lung dose evaluation program (LUDEP)developed by National Radiological Protection Board (NRPB) as references. In general indoor and mine environments, the deviation between the deposition fractions of attached aerosol on the wire screens designed in this study and its reference values in the respiratory tract is less than 5%. It is possible to accurately estimate the deposition fractions of radon progeny in different regions of the respiratory tract through mimic measurements of radon progeny collected with the new sampler.For estimation of the deposition fractions of radon progeny in different regions of the respiratory tract, a new sampler consisting of three different configurations of sampling heads was developed. The deposition fractions of aerosols on the wire screens inside the sampling heads were calculated with the fan model of filtration theory. The deposition fractions of aerosols in different regions of the respiratory tract were calculated with the lung dose evaluation program （LUDEP） developed by National Radiological Protection Board （NRPB） as references. In general indoor and mine environments, the deviation between the deposition fractions of attached aerosol on the wire screens designed in this study and its reference values in the respiratory tract is less than 5%. It is possible to accurately estimate the deposition fractions of radon progeny in different regions of the respiratory tract through mimic measurements of radon progeny collected with the new sampler.

关 键 词：放射性污染 环境放射学 气溶胶 呼吸过程 

分 类 号：X837[环境科学与工程—环境工程] X125