眉山市室外地表γ剂量率本底水平调查  

Investigation on the bottom level of surface terrestrial gamma radiation dose rate in the open air in Meishan City

作　　者：郭建梅[1] 何星宇 郑旭丽 辛正利[1] GUO Jian-mei;HE Xing-yu;ZHENG Xu-li;XIN Zheng-li(Meishan Municipal Center for Disease Control and Prevention,Meishan 620010,Sichuan Province,China)

机构地区：[1]眉山市疾病预防控制中心,四川眉山620010

出　　处：《职业卫生与病伤》2023年第1期52-54,64,共4页Occupational Health and Damage

基　　金：四川省科技计划项目(项目编号:2019YFS0435)。

摘　　要：目的 了解眉山市室外地表γ剂量率本底水平,探讨眉山市地表γ剂量率本底差异。方法 2017—2021年,使用环境级X-γ剂量率仪进行巡检,收集眉山市室外地表γ剂量率本底水平,采用t检验,方差分析等方法,并使用SPSS 21.0软件进行分析,以α=0.05作为检验水准进行检验。结果 本次调查获得480个点的室外地表γ辐射剂量率本底水平,均值为81.62 nGy/h,室外地表天然γ辐射剂量本底水平所致居民人均年有效剂量当量为0.1 mSv。城市道路剂量率本底水平大于一般道路,眉山地域的周围区域高于中心区域,东部地区大于西部地区。结论 眉山市室外地表γ辐射剂量属于正常的γ剂量率本底水平。Objective To investigate the background level of the outdoor surface gamma radiation dosage levels in the open air in Meishan City,and to explore the the differences of dose rate of surface gamma in Meishan City. Methods Dosages of X-γ radiation at selected outdoor sites were monitored from 2017 to 2021. The t-test and variance analysis were used for data analysis by SPSS 21.0,andα=0.05 was considered as the test level. Results In this survey,we got 480 valid questionnaires,and the average dosages of surface γ radiation was 81.62 n Gy/h, and the average annual effective dose per capita of outdoor surface γ radiation was 0.1 mSv. The γ radiation level of urban road was higher than that of general road,and the surrounding area of Meishan Region was higher than that of central area,and the eastern area was higher than that of western area. Conclusions The outdoor surface gamma-radiation dose was normal bottom level in Meishan City.

关 键 词：室外地表γ辐射剂量率 本底水平 眉山市 

分 类 号：X837[环境科学与工程—环境工程]