珠海市环境中^(222)Rn、^(220)Rn浓度的调查研究  

Survey on the Environmental Concentration of 222Rn and 220Rn in Zhuhai

作　　者：陈斌 张世靖 尚兵[2] 练海泉 黄炳球 

机构地区：[1]珠海市卫生防疫站,广东519000 [2]卫生部工业卫生实验所

出　　处：《中国预防医学杂志》2001年第2期114-117,共4页Chinese Preventive Medicine

摘　　要：目的 了解珠海市室内外空气中222Rn、220Rn及其子体浓度及由此而对居民所产生的有效剂量。方法采用固体径迹探测器测量222Rn、220Rn浓度,采用α潜能法测量222Rn、220Rn子体浓度。结果 珠海市室内外222Rn及其子体的浓度分别为室内60.4 Bq·m-3、35.4 EEC Bq·m-3和室外23.4 Bq·m-3、12.3 EEC Bq·m-3。室内外220Rn子体浓度分别为2.7和0.8 EEC Bq·m-3。222Rn、220Rn及其子体所致居民年有效剂量分别为1.62和0.61mSv。结论 珠海市室内外222Rn、220Rn浓度高于世界均值,其原因与珠海地区土壤和岩石中天然放射性核素背景有关。Objective To detect 222Rn,220 Rn and their progenies concentrations, and the annual effective dose causes to residents in Zhuhai area.Methods 222Rn and 220Rn concentrations were obtained by using Rn - Tn solid state nuclear track detectors.The potential energy analysis method was used to detect their progeny concentrations. Results 222Rn and its progeny concentration in Zhuhai are 60.4Bq·m-3, 35.4 EEC Bq·m-3 (indoor), and 23.4 Bq·m-3, 12.3 EEC Bq·m-3 (outdoor), respectively.220 progeny concentrations in indoors and outdoors are 2.7 and 0.8 EEC Bq·m-3, respectively.The annual effective doses from 222Rn and 220Rn progenies are 1.62 and 0.61mSv, respectively. Conclusions 222Rn and 220Rn concentrations indoor and outdoors in Zhuhai are high than the average level of the world. It probably correlated with a higher natural radionuclides content in sois and rock of this area.

关 键 词：年有效剂量 氡 222 氡220 环境浓度 调查 珠海市 

分 类 号：X837[环境科学与工程—环境工程]