2012-2014年成都市地表γ辐射水平调查分析  

Surface Gamma Radiation Levels in Chengdu from 2012 to 2014

作　　者：潘兴平[1,2] 兰亚佳[1] 涂程[2] 王琳[2] 冉龙举 涂俊 杨非[2] 卢小青 

机构地区：[1]四川大学华西公共卫生学院,成都610041 [2]成都市疾病预防控制中心

出　　处：《预防医学情报杂志》2016年第5期507-510,共4页Journal of Preventive Medicine Information

摘　　要：目的通过对成都市2012-2014年地表γ辐射进行监测,了解近年来成都市地表γ辐射剂量率现状水平和分布,为放射事故预警及事态评估提供科学、全面的基础数据。方法使用6150AD-b/H型直读式γ辐射仪,按照布点方案,监测人群聚集区室外和室内的γ辐射剂量率,用SPSS进行数据分析。结果共有3 588个监测点,其中成都市室内1 053个点,室外2 535个点,室内γ辐射剂量率均值为89.7 n Gy/h,室外γ辐射剂量率均值为65.4 n Gy/h,不同路面道路中,花岗岩路面最高,均值为84.4 n Gy/h。成都市地表γ辐射所致居民人均年有效剂量当量0.57 m Sv,低于全国、全省和自身(1981-1984)水平。结论成都市地表γ辐射剂量率属于正常地表辐射水平。Objective To investigate current levels and distribution of surface gamma radiation doses in Chengdu by monitoring surface gamma radiation from 2012 to 2014 so as to provide scientific and comprehensive basic data for early warning and situation assessment of radiation accidents. Methods Using 6150AD- b / H direct-reading gamma radiometers,indoor and outdoor gamma radiation dose rates of crowed areas were monitored according to the layout,and data were analyzed using SPSS. Results 3 588 monitoring sites were included,including 1 053 indoor sites and 2 535 outdoor sites. The mean indoor and outdoor gamma radiation dose rates were 89. 7 n Gy / h and 65. 4n Gy / h,respectively. The mean gamma radiation dose rate of granite pavements was the highest（84. 4 n Gy / h） among different types of pavements. The annual effective dose per capita due to gamma radiation was 0. 57 m Sv,lower than the national,provincial and inherent（1981- 1984） levels. Conclusion The surface gamma radiation dose rate in Chengdu is normal.

关 键 词：地表γ辐射 剂量率 成都市 

分 类 号：R144[医药卫生—公共卫生与预防医学]