Source and Components Analysis of Aerosols in Air Pollution—2nd Edition

A special issue of Toxics (ISSN 2305-6304).

Deadline for manuscript submissions: 5 September 2026 | Viewed by 577

Editors


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Guest Editor
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Interests: air pollution; aerosol; haze; air quality monitoring; atmospheric particulate matter
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Interests: volatile organic compounds; ozone pollution; formaldehyde; secondary organic aerosol formation mechanism; PM2.5; isoprene
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Research on atmospheric aerosols has received increasing attention in recent years due to their significant impact on our health and climate. In particular, analyses of the sources and components of aerosols have long been a research hotspot in the field of atmospheric environmental science. This Special Issue will focus on cutting-edge research achievements related to the sources and composition of aerosols, especially research on the sources, chemical components, toxicological characteristics, and health effects of aerosols. For this Special Issue, we welcome original research papers on the following topics: methods for analyzing the sources of particulate matter; the chemical composition and mechanisms of formation of particulate matter; the physical and microscopic morphology of particulate matter; the composition of aerosol organic compounds; the toxicological characteristics of aerosol components; and cutting-edge research achievements relating to the health effects of particulate matter.

Prof. Dr. Jian Gao
Dr. Yujie Zhang
Guest Editors

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Keywords

  • atmospheric aerosols
  • sources and composition of aerosols
  • toxicological characteristics
  • particulate matter
  • aerosol components

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Published Papers (1 paper)

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Research

15 pages, 2076 KB  
Article
Responses of Secondary Inorganic Aerosols to Synergistic NOx and NH3 Emission Control Based on an Inversion Inventory
by Xiaohui Du, Minghui Wei, Linglu Qu, Wei Tang, Chao Yu, Zhongzhi Zhang, Yang Yu and Yang Li
Toxics 2026, 14(8), 657; https://doi.org/10.3390/toxics14080657 - 26 Jul 2026
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Abstract
Secondary inorganic aerosols (SIAs) are critical components of regional air pollution, yet uncertainties in bottom–up emission inventories lead to biases in the simulation of nitrate (PNO3) and ammonium (PNH4+). This study utilizes a joint NOx−NH [...] Read more.
Secondary inorganic aerosols (SIAs) are critical components of regional air pollution, yet uncertainties in bottom–up emission inventories lead to biases in the simulation of nitrate (PNO3) and ammonium (PNH4+). This study utilizes a joint NOx−NH3 inversion inventory constrained by satellite observations to investigate the response characteristics of SIAs to precursor reductions in the Beijing–Tianjin–Hebei (BTH) region during July 2020. Results indicate that the a priori emission inventory significantly underestimated NH3 emissions in the BTH region, with a posteriori emission in cities such as Shijiazhuang and Handan increasing to 2–3 times the a priori levels, while NOx emissions were slightly underestimated. Sensitivity analysis conducted via Comprehensive Air Quality Model with extensions (CAMx)—Decoupled Direct Method (DDM) reveals that the sensitivities of PNO3 and PNH4+ to precursor variations are higher in south–central BTH; specifically, the sensitivity of PNO3 concentration to NOx emission abatement under the a posteriori inventory rises substantially compared with a priori estimates, with relative growth rates spanning 33% to 308% across the study domain. Scenario simulations demonstrate that synergistic NOx and NH3 control is the most effective strategy, reducing PNO3 and PNH4+ concentrations by 2.27 ug/m3 and 0.77 ug/m3, respectively. Full article
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