摘要
自1992年，浙江省辐射环境监测站对秦山核电基地外围环境辐射水平进行了连续的监督性监测。2001～2005年，基地外围环境气溶胶总α、总β放射性水平及其比值的监测结果表明：秦山核电基地周围环境5km范围内4个监测点气溶胶总α．总β比活度范围分别为0．02-0．38、0．10-1．81mBq/m^3。平均值分别为0．12、0．4．5mBq／m^3，略低于杭州市对照点监测值（0．15、0．52mBq/m^3）；总β与总α比值范围为1．2-10．2。平均值为4．3，略高于对照点监测值（3．7）。表明在秦山核电厂正常运行情况下，基地外围环境气溶胶总α、总β放射性水平没有明显的变化。
The results of gross α, gross β activity and the ratio of gross β to gross α during the period of 2001 - 200.5 in environmental aerosol samples around Qinshan NPP are presented in this paper. A total of 170 samples of aerosol were collected at 4 monitoring posts in the surrounding of the NPP. The measured specific activities of gross α and gross β are in the range of 0.02-0.38 mBq/m^3 and 0.10 - 1.81 mBq/m^3, respectively, with average of 0.12 mBq/m^3 and 0.44 mBq/m^3, lower than the average of 0.15 mBq/ms and 0.52 mBq/m^3, for Hangzhou City. The ratio of gross β to gross α is in the ranger of 1.2 - 10.2, with an average of 4.3, slightly higher than 3.7, measured for Hangzhou City. It indicated that there is no signifcant change in the specific activity of grass α and gross β in the environmental aerosol samples.
出处
《辐射防护通讯》
2006年第5期31-35,共5页
Radiation Protection Bulletin
关键词
环境放射性
监测
气溶胶
总α总β秦山核电站
Environmental radioactivity Monitoring Aerosol Gross α Gross β Qinshan NPP
