Field measurement of the 218Po, 214Pb and 214Bi concentrations in typical indoor and outdoor environments in Beijing

Field measurement of the 218Po, 214Pb and 214Bi concentrations in typical indoor and outdoor environments in Beijing
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北京市典型室内外环境中218Po、214Pb、214Bi浓度的现场测量

DOI:
10.1007/s10967-017-5309-8
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发表时间:
2017-06
期刊:
J Radioanal Nucl Chem
影响因子:
--
通讯作者:
Qiuju Guo
Qiuju Guo
中科院分区:
其他
文献类型:
--
作者:
Tongke Zhao;Lei Zhang;Qiuju Guo

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218Po、214Pb和214Bi的活度浓度[即C(218Po)、C(214Pb)和C(214Bi)]和计算的浓度比[即1:C(214Pb)/C(218Po):C(214Bi)/C(218Po)]是评估氡及其子体暴露的必要条件。本研究在Kerr法的基础上,建立了一种高灵敏度、低不确定度的氡子体浓度测定方法。报道了北京典型室内和室外环境氡子体浓度的现场测量结果和计算浓度比。讨论了空气交换率对室内环境氡子体浓度比的影响。
The activity concentrations of 218Po, 214Pb and 214Bi [i.e. C(218Po), C(214Pb), and C(214Bi)] and the calculated concentration ratios [i.e. 1:C(214Pb)/C(218Po):C(214Bi)/C(218Po)] are necessary for assessing radon and its progenies exposure. In this study, a measurement method of radon progenies concentrations with both high sensitivity and low uncertainty, was developed based on the Kerr method. The field measurement results of radon progeny concentrations and calculated concentration ratios in both typical indoor and outdoor environments in Beijing, China, were reported. The effects of air exchange rate on concentration ratios of radon progenies in indoor environments were discussed.
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