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郊区某地点室外和室内空气中包含氡衰变产物的纳米气溶胶。

Nanoaerosols including radon decay products in outdoor and indoor air at a suburban site.

作者信息

Smerajec Mateja, Vaupotič Janja

机构信息

Department of Environmental Sciences, Radon Center, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.

出版信息

J Toxicol. 2012;2012:510876. doi: 10.1155/2012/510876. Epub 2012 Feb 27.

DOI:10.1155/2012/510876
PMID:22523488
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3317232/
Abstract

Nanoaerosols have been monitored inside a kitchen and in the courtyard of a suburban farmhouse. Total number concentration and number size distribution (5-1000 nm) of general aerosol particles, as measured with a Grimm Aerosol SMPS+C 5.400 instrument outdoors, were mainly influenced by solar radiation and use of farming equipment, while, indoors, they were drastically changed by human activity in the kitchen. In contrast, activity concentrations of the short-lived radon decay products (218)Po, (214)Pb, and (214)Bi, both those attached to aerosol particles and those not attached, measured with a Sarad EQF3020-2 device, did not appear to be dependent on these activities, except on opening and closing of the kitchen window. Neither did a large increase in concentration of aerosol particles smaller than 10 or 20 nm, with which the unattached radon products are associated, augment the fraction of the unattached decay products significantly.

摘要

已对一间厨房和一座郊区农舍的庭院内的纳米气溶胶进行了监测。使用Grimm气溶胶扫描迁移率粒径谱仪+C 5.400仪器在户外测量的普通气溶胶颗粒的总数浓度和数量粒径分布（5-1000纳米），主要受太阳辐射和农用设备使用的影响，而在室内，它们会因厨房内的人类活动而急剧变化。相比之下，使用Sarad EQF3020-2设备测量的短寿命氡衰变产物（218）Po、（214）Pb和（214）Bi的活度浓度，无论是附着在气溶胶颗粒上的还是未附着的，似乎都不依赖于这些活动，除了厨房窗户的开关。与未附着的氡产物相关的小于10或20纳米的气溶胶颗粒浓度的大幅增加，也没有显著增加未附着衰变产物的比例。

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