大气气溶胶中210Pb和210Po活度浓度及来源

摘要/Abstract

摘要： 大气气溶胶中关键核素²¹⁰Pb和²¹⁰Po对人体的剂量贡献不可忽视,气溶胶中的²¹⁰Pb和²¹⁰Po主要来自大气中²²²Rn的衰变。UNSCEAR报告给出的近地面大气中²¹⁰Pb、²¹⁰Po的平均活度浓度推荐值分别为500 μBq/m³、50 μBq/m³。分析讨论了大气气溶胶中²¹⁰Pb和²¹⁰Po的天然来源,以及煤炭开采利用、土壤再悬浮、平流层气溶胶贡献、不同气团的来源、火山烟羽、生物释放、其他人为活动影响等额外来源。

关键词: 大气气溶胶, ²¹⁰Pb, ²¹⁰Po, 活度浓度, 来源

Abstract: ²¹⁰Pb and ²¹⁰Po, key nuclides in atmospheric aerosol, are mainly from decay of ²²²Rn inthe atmosphere. Their contributions to human dose cannot be overlooked definitely. A brief account about their activity concentration ranges in atmospheric aerosol is provided. As recommended in UNSCEAR reports, mean activity concentrationsof them in near surface atmosphere are 500 and 50 Bq/m³ respectively. The natural sources, as well as additional sources, of both nuclides are also analyzedand discussed.

Key words: Atmospheric aerosol, ²¹⁰Pb, ²¹⁰Po, Activity concentration, Source

中图分类号:

X837

张静, 李鹏翔, 李周, 卫晓峰. 大气气溶胶中²¹⁰Pb和²¹⁰Po活度浓度及来源[J]. 辐射防护通讯, 2015, 35(6): 17-22.

Zhang Jing, Li Pengxiang, Li Zhou, Wei Xiaofeng. ²¹⁰Pb and ²¹⁰Po Activity Concentrations and Sources in Atmospheric Aerosol[J]. RADIATION PROTECTION BULLETIN, 2015, 35(6): 17-22.

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大气气溶胶中²¹⁰Pb和²¹⁰Po活度浓度及来源

²¹⁰Pb and ²¹⁰Po Activity Concentrations and Sources in Atmospheric Aerosol

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