摘要
为获得兰州地区近年来大气气溶胶中放射性核素210Pb浓度变化情况。2009~2012年度利用大流量大气气溶胶采样器采集样品,使用低本底高纯锗γ谱仪测定采集样品中210Pb。获得了监测期间:兰州地区大气气溶胶中210Pb浓度的变化范围为0.12~4.33 mBq·m-3,平均值为0.75±0.42 mBq·m-3;兰州地区大气气溶胶中放射性核素210Pb浓度冬季含量较高,多雨的5~9月份含量较低;兰州地区成人210Pb的年吸收剂量为6.68×10-6Sv。
In order to obtain the variation of 210 Pb concentration in aerosol of Lanzhou .The aerosol samples were collected on the filter by a high volume air sampler .The 210 Pb concentration was measured by low background HPGe gamma spectrometer .During the monitoring period , the 210 Pb concentration varied from 0.12 to 4.33 mBq m -3with an average of 0.75 -0.42 mBq m-3 in the Lanzhou aerosol;The atmospheric210Pb concentrations were higher in winter and lower from May to September in Lanzhou;The annual effective dose for inhalation of 210 Pb to the adult in Lanzhou was 6.68 ×10 -6 Sv.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2014年第1期114-116,共3页
Nuclear Electronics & Detection Technology
