Size Distribution of Chlorinated Polycyclic Aromatic Hydrocarbons in Atmospheric Particles
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- 作者：Kensaku Kakimoto ; Haruna Nagayoshi…
- 刊名：Archives of Environmental Contamination and Toxicology
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：72
- 期：1
- 页码：58-64
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Ecotoxicology; Pollution, general; Environmental Health; Environmental Chemistry; Soil Science & Conservation; Monitoring/Environmental Analysis;
- 出版者：Springer US
- ISSN：1432-0703
- 卷排序：72
文摘
The particle size distribution of chlorinated polycyclic aromatic hydrocarbons (ClPAHs) in particulate matter (PM) in Japan is examined for the first time. PM was collected using a PM0.1 air sampler with a six-stage filter. PM was collected in October 2014 and January 2015 to observe potential seasonal variation in the atmospheric behavior and size of PM, including polycyclic aromatic hydrocarbons (PAHs) and ClPAHs. We found that the concentration of PAHs and ClPAHs between 0.5–1.0 μm and 1.0–2.5 μm markedly increase in January (i.e., the winter season). Among the ClPAHs, 1-ClPyrene and 6-ClBenzo[a]Pyrene were the most commonly occurring compounds; further, approximately 15% of ClPAHs were in the nanoparticle phase (<0.1 μm). The relatively high presence of nanoparticles is a potential human health concern because these particles can easily be deposited in the lung periphery. Lastly, we evaluated the aryl hydrocarbon receptor (AhR) ligand activity of PM extracts in each size fraction. The result indicates that PM < 2.5 μm has the strong AhR ligand activity.