210Pb分析方法在成都大气气溶胶中的应用

摘要

用γ能谱法和放射化学法对大气气溶胶中210Pb的活度浓度进行测定,对比分析结果,γ能谱法能够满足大气环境气溶胶中210 Pb的常规监测.用γ能谱法对成都地区大气气溶胶中210Pb活度浓度进行了为期两年的采样监测,年平均浓度为1.50 mBq/m3,浓度变化有明显的季节性特征,冬季高夏季低.%Gamma ray spectrometry method and radiochemical method were introduced to measure the radioactivity concentrations of 210Pb in aerosol of Chengdu.Result of the two analytical methods were compared.Gamma ray spectrometry method can meet the routine monitoring of 210 Pb in atmospheric aerosol.From 2015 to 2016,the radioactivity concentrations of 210Pb in aerosol of Chengdu were determined by Gamma ray spectrometry method.The annual average concentrations of 210Pb were 1.50mBq/m3.The radioactivity concentrations reflected obvious seasonal trends.The 210Pb levels were higher in winter and lower in summer.