2008—2015年田湾核电站周围沉降物中总α、总β放射性水平监测  

Monitoring of grossαand gross β radioactivity levels in the sediment around Tianwan Nuclear Power plant,2008—2015

作　　者：陈群[1] 杨小勇[1] 马加一[1] 冯子雅[1] 庄家毅 CHEN Qun;YANG Xiao-yong;MA Jia-yi;FENG Zi-ya;ZHUANG Jia-yi(Jiangsu Provincial Center for Disease Control and Prevention,Nanjing 210009,China;Lianyungang Municipal Center for Disease Control and Prevention)

机构地区：[1]江苏省疾病预防控制中心,南京210009 [2]连云港市疾病预防控中心

出　　处：《环境卫生学杂志》2022年第1期43-46,共4页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：江苏省卫生计生委卫生标准研究课题(S2017003);江苏省流行病学重点学科(ZDXK A 2016008);江苏省医学创新团队(CXTD A2017029)。

摘　　要：目的调查田湾核电站地区沉降物中总α、总β放射性水平,并与对照地区沉降物中总α、总β放射性水平进行比较分析,为我省核电站周围总α、总β放射性水平监测网络提供数据支持。方法根据《辐射环境监测技术规范》(HJ/T 61-2001)要求,分别在距离田湾核电站30和300 km处设置沉降物监测点和对照地区监测点,每个采样点每个季度采集1次。2008—2015年分别采集田湾核电站地区和对照地区32个沉降物样品。依据《生活饮用水标准检验方法放射性指标》(GB/T 5750.13-2006)测量沉降物中总α放射性水平和总β放射性水平。结果2008—2015年,田湾核电站地区和对照地区64个沉降物样品中总α放射性水平分别为(1.10~7.19)Bq/m^(2)和(1.20~8.24)Bq/m^(2),地区间差异无统计学意义(t=0.42,P>0.05);总β放射性水平分别为(1.14~24.2)Bq/m^(2)和(2.66~22.3)Bq/m^(2),地区间差异无统计学意义(t=0.52,P>0.05).两地沉降物中总α、总β放射性水平年度差异均有统计学意义(F值分别为3.62和3.18,P<0.01),季度差异均无统计学意义(F值分别为1.30和0.04,P>0.05)。结论田湾核电站自运行以来其外围环境沉降物中总α、总β放射性水平未见升高,与对照地区水平相当,今后仍需继续开展环境沉降物放射性的监测。Objective To investigate the grossαand grossβradioactivity levels in the sediment around Tianwan Nuclear Power Plant and compare them with the levels in the control area,and to provide data support for the monitoring network of grossαand grossβradioactivity levels around Tianwan Nuclear Power Plant.Methods According to the requirements of the Technical Criteria for Radiation Environment Monitoring(HJ/T 61-2001),sediment monitoring points and control monitoring points were set at 30 and 300 km away from the Tianwan Nuclear Power Plant,respectively.Samples were collected once every quarter at each monitoring site.From 2008 to 2015,32 sediment samples were collected from the Tianwan Nuclear Power Plant area and control area,respectively.Grossαand grossβradioactivity levels in the sediment were determinated according to the Standard Examination Methods for Drinking Water-Radiological Parameters(GB/T 5750.13-2006).Results From 2008 to 2015,the grossαradioactivity levels of total 64 sediment samples from the Tianwan Nuclear Power Plant area and control area were(1.10-7.19)Bq/m^(2) and(1.20-8.24)Bq/m^(2),respectively;there was no significant difference between different areas(t=0.42,P>0.05);the grossβradioactivity levels of total 64 sediment samples from the Tianwan Nuclear Power Plant area and control area were(1.14-24.2)Bq/m^(2) and(2.66-22.3)Bq/m^(2),respectively,and there was no significant difference between different areas(t=0.52,P>0.05).The total of the grossαand grossβradioactivity levels in the sediment samples had a significant difference among different years(F=3.62 and F=3.18,respectively,P<0.01),and there was no significant difference between different quarters(F=1.30 and F=0.04,respectively,P>0.05).ConclusionSince the operation of Tianwan Nuclear Power Plant,the grossαand grossβradioactivity levels in the sediment in its surrounding environment have not increased and are comparable to the levels in the control area.It is necessary to continue monitoring the radioactivity of environmental sedime

关 键 词：核电 环境介质 放射性监测 

分 类 号：R145[医药卫生—公共卫生与预防医学]