Atmospheric Concentrations and Air–Soil Exchange of Polycyclic Aromatic Hydrocarbons (PAHs) in Typical Urban–Rural Fringe of Wuhan–Ezhou Region, Central China

被引：0
作者：
Donghui Wu
Hongxia Liu
Zhiguo Wang
Jiaquan Zhang
Changlin Zhan
Shan Liu
Ting Liu
Jingru Zheng
Ruizhen Yao
Junji Cao
机构：
[1] Hubei Polytechnic University,Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation
[2] Chinese Academy of Sciences,Key Laboratory of Aerosol Chemistry and Physics (KLACP), Institute of Earth Environment
来源：
Bulletin of Environmental Contamination and Toxicology | 2020年 / 104卷
关键词：
Polycyclic aromatic hydrocarbons (PAHs); Atmospheric concentration; Spatial distribution; Air–soil exchange; Urban–rural fringe;
D O I：
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中图分类号：
学科分类号：
摘要：
During the summer of 2015, polycyclic aromatic hydrocarbons (PAHs) in the atmosphere were collected by passive air samplers in typical urban–rural fringe of Wuhan–Ezhou region, Central China. The results showed that 16 kinds of PAHs were ubiquitous with the concentrations of ∑16PAHs from 14.69 to 136.30 ng·m−3 and the mean concentration of 43.03 ng·m−3. Phenanthrene (Phe), fluoranthene (Fla) and pyrene (Pyr) were major components, which accounted for 81% of ∑16PAHs. PAHs atmospheric concentrations presented obvious spatial variation, being significantly related to geographical environment and influenced by anthropogenic activity. Air–soil exchange status of PAHs was discussed according to the fugacity fraction (ff). The results showed that HMW-PAHs behaved as net deposition, while LMW-PAHs were more likely to establish dynamic equilibrium between atmosphere and soil than MMW-PAHs and HMW-PAHs. For some PAHs, such as acenaphthylene (Acy) and anthracene (Ant), the soil acted as second sources of them.
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页码：96 / 106
页数：10
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