攀枝花市环境γ辐射剂量率及居民受照剂量调查  

Investigation on γ-radiation dose rate of environment and residents' exposure dose in Panzhihua City

作　　者：郭元[1] 唐新龄[1] 陈建新[1] 李明姜[1] 彭莹子[1] G UO Yuan;TANG Xin-ling;CHEN Jian-xin;LI Ming-jiang;PENG Ying-zi(Health Monitoring Research Department, Panzhihua Center for Disease Control and Prevention, Panzhihua Sichuan, 617000, China)

机构地区：[1]攀枝花市疾病预防控制中心卫生监测研究室,四川攀枝花617000

出　　处：《职业与健康》2018年第11期1525-1527,共3页Occupation and Health

摘　　要：目的了解攀枝花市环境γ辐射水平和居民生活环境天然辐射外照射水平并估算居民暴露剂量。方法采用分层随机方式,在攀枝花市每个乡镇的居民生活环境随机选点开展环境γ辐射剂量率检测,并估算居民所受照有效剂量当量。结果攀枝花市室外环境地表γ辐射剂量率平均值为88.1 n Gy/h,室内环境γ辐射剂量率平均值为118.4 n Gy/h,室内外天然γ辐射剂量所致人均年有效剂量当量约0.69 m Sv,集体年有效剂量当量约为771.9人·Sv/a,与全国平均值和世界典型值相似。结论攀枝花天然放射性环境安全可靠,不会对民众产生不良影响,适合人类居住。[Objective]To understand the environment γ-radiation level in Panzhihua City and natural radiation external radiation level in the living environment of residents,estimate residents＇ exposure dose. [Methods] Using stratified random method,the monitoring points of residents＇ living environment were randomly selected to detect the environment γ-radiation dose rate,and effective dose equivalent of residents＇ exposure was estimated. [Results] In Panzhihua City,the mean of dose rate of γ-radiation on the outdoor and indoor environment was 88.1 n Gy/h and 118.4 n Gy/h respectively,individual annual effective dose equivalent caused by indoor and outdoor natural γ-radiation was 0.69 m Sv,and collective annual effective dose equivalent was 771.9 person·Sv/a,which were similar to the national average and the world typical value. [Conclusion] The natural radioactivity environment in Panzhihua City is safe and reliable. It will not have adverse effects on the public and is suitable for human habitation.

关 键 词：天然放射性 Γ辐射剂量率 即时测量 年有效剂量 

分 类 号：R145[医药卫生—公共卫生与预防医学]