气溶胶中^(210)Po分析方法研究  

Study on the determination method of ^(210)Po in aerosol

作　　者：李鹏翔[1] 李周[1] 张静[1] 高泽全[1] 王瑞俊[1] 韩玉虎[1] 任晓娜[1] 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《辐射防护》2016年第2期112-116,126,共6页Radiation Protection

摘　　要：经过同位素示踪实验,研究了酸度、时间、体积、温度、还原剂对210Po自沉积的影响,以及气溶胶预处理的条件实验,得出了最佳实验条件,对实际气溶胶样品中210Po进行了分析测定,全程化学回收率在94.0%~103%,平均值为(98.1±5.5)%。太原地区冬季气溶胶中210Po的活度浓度范围为1.21~1.53m Bq/m3,平均值为(1.31±0.08)m Bq/m3。Through the isotopic tracer experiments, influences of acidity, time, temperature and reductant in the self-deposition were studied as well as the pretreatment condition of aerosol, with the optimal experimental conditions derived at last. This method has been applied to determine ^210Po in real aerosol samples with a full recovery of 94.0%--103% and an average value of （98.1 ± 5.5）%. ^210Po aerosol concentration of Taiyuan city in winter is 1.21--1.53 mBq/m^3 , its average value is （ 1.31 ± 0.08） mBq/m^3.

关 键 词：气溶胶 ^210PO 自沉积 回收率 

分 类 号：X513[环境科学与工程—环境工程]