Sources and Atmospheric Processes Linked to the Formation of Oxy-and Nitro-PAHs in the Urban Environment

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Aerosols".

Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 3774

Special Issue Editors


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Guest Editor
School of Geography, Earth & Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
Interests: atmospheric chemistry; secondary organic aerosols; source apportionment (Receptor modelling); analytical developments (GC-MS, GC x GC); data analysis (e.g., AMS)
Special Issues, Collections and Topics in MDPI journals
South Coast Air Quality Management District, Diamond Bar, CA 91792, USA
Interests: urban air quality; air pollutant and greenhouse gas emission soruces; air quality forecast; environmental policy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Exposure to poor air quality results in approximately 3 million premature deaths annually. Impacts of particulate matter (PM) on health are mainly linked to its chemical composition, and depend on the presence of toxic compounds such as polycyclic aromatic hydrocarbons (PAHs), mostly considered as anthropogenic, and emitted in the atmosphere into the gaseous and particulate phases via incomplete combustion processes, such as residential heating (mainly wood burning) and vehicle exhaust. The atmospheric oxidation of PAHs leads to the formation of oxidized compounds such as oxygenated-PAHs (oxy-PAHs) and nitrated-PAHs (nitro-PAHs). The study of these PAH derivatives has become a prime concern, as most are speculated or considered to be carcinogenic and potentially more mutagenic than PAHs, even at lower concentrations. In addition, these compounds can also be a precursor of secondary organic aerosols (SOA), which may represent a large source of SOA in urban areas. However, the identification of their sources and/or formation processes appear to be difficult, as these compounds may be formed either through secondary processes or primarily emitted.

The aim of this Special Issue is to collect information based on field and laboratory measurements, review papers, and model applications to develop a deep understanding on primary and secondary processes responsible for the formation of oxy-PAHs and nitro-PAHs, and adverse effects on air quality, climate and human health.

Dr. Deepchandra Srivastava
Dr. Xiang Li
Guest Editors

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Keywords

  • oxy- and nitro-PAHs
  • secondary organic aerosol
  • atmospheric processes
  • air quality
  • health impacts
  • field measurements
  • laboratory measurements
  • modelling

Published Papers (1 paper)

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Research

12 pages, 722 KiB  
Article
Emission of PM2.5-Bound Polycyclic Aromatic Hydrocarbons from Biomass and Coal Combustion in China
by Xinghua Li, Zihao Wang and Tailun Guo
Atmosphere 2021, 12(9), 1129; https://doi.org/10.3390/atmos12091129 - 02 Sep 2021
Cited by 8 | Viewed by 2279
Abstract
Field measured PAH emissions from diverse sources in China are limited or even not available. In this study, the PM2.5-bound PAH emission factors (EFs) for typical biomass and coal combustion in China were determined on-site. The measured total PAH EFs were [...] Read more.
Field measured PAH emissions from diverse sources in China are limited or even not available. In this study, the PM2.5-bound PAH emission factors (EFs) for typical biomass and coal combustion in China were determined on-site. The measured total PAH EFs were 24.5 mg/kg for household coal burning, 10.5–13.9 mg/kg for household biofuel burning, 8.1–8.6 mg/kg for biomass open burning, and 0.021–0.31 mg/kg for coal-fired boilers, respectively. These EF values were compared with previous studies. The sources profiles of PAHs for four sources were developed to use in chemical mass balance receptor modelling. BaP equivalent EFs (EFBaPeq) were calculated to evaluate PAH emission toxicity among different combustion sources, and were 6.81, 2.94–4.22, 1.59–3.62, and 0.0006–0.042 mg/kg for those four types of sources, respectively. Full article
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