Activity level of gross α and gross β in airborne aerosol samples around the Qinshan NPP

Activity level of gross α and gross β in airborne aerosol samples around the Qinshan NPP 1 corresp first-author E-mail: kaselcb@163.com E-mail: kaselcb@163.com kaselcb@163.com 1 1 1 1 1 Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012, China Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012, China The monitoring results of gross α and gross β activity from 2001 to 2005 for environmental airborne aerosol samples around the Qinshan NPP base are presented in this paper. A total of 170 aerosol samples were collected from monitoring sites of Caichenmen village, Qinlian village, Xiajiawan village and Yangliucun village around the Qinshan NPP base. The measured specific activity 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 an average of 0.11 mBq/m 3 and 0.45mBq/m 3 , respectively. They are lower than the average of 0.15 mBq/m 3 and 0.52mBq/m 3 , of reference site at Hangzhou City. It is indicated that the specific activity of gross α and gross β for environmental aerosol samples around the Qinshan NPP base had not been increased in normal operating conditions of the NPP. Environmental radioactivity Aerosol Gross α Gross β Qinshan NPP References The State Standard of PRC: The technical regulation of radiant environmental monitor HJ/T61-2001 (in Chinese) The State Standard of PRC: Determination of gross β activity in water: Evaporation method. EJ-T900-94 (in Chinese) The State Standard of PRC: Determination of gross α activity in water: Thick source method. EJ-T1075-1998 (in Chinese) 10.1016/S1001-8042(07)60042-6 TM623.8,X831 2006-12-20 2007-06-20 2021-01-19 2007 Nuclear Science and Techniques 03 18