Chemical Composition and Sources of Particles in the Atmosphere (2nd Edition)
A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Aerosols".
Deadline for manuscript submissions: closed (1 June 2024) | Viewed by 8806
Special Issue Editors
Interests: aerosols; source apportionment; nitrogen-containing organic aerosols; aerosol hygroscopicity
Special Issues, Collections and Topics in MDPI journals
Interests: organic aerosol; volatility; source apportionment; mass spectrometer; secondary formation
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
This Special Issue is a follow-up of the first Special Issue entitled “Chemical Composition and Sources of Particles in the Atmosphere” (https://www.mdpi.com/journal/atmosphere/special_issues/particles) published in Atmosphere in 2023 and will cover all aspects of Chemical Composition and Sources of Particles in the Atmosphere.
The atmosphere of Earth is rich in aerosols. Their presence has a strong impact on air quality, human health, and the climate, which has been reported for several decades. Since the early 1960s, instruments have been available to characterize the aerosol in detail. With the development of measurement techniques in recent years, the contribution of aerosols from different chemical compositions has started to be recognized, yet it is still far from clear. For example, there are thousands of organic molecular compounds in particles that cannot be distinguished using one instrument. Recent breakthroughs for recognizing highly oxygenated organic molecules (HOMs), organic nitrates (ONs), organic sulfates (OSs), and amines have helped us to understand their chemical and physical properties, facilitating the elucidation of their environmental impact. The aerosols in the atmosphere can be derived from primary emissions, which are a direct transfer of particles to the air. Primary emissions include natural activity, such as sea spray drifts, volcanic eruptions, and forest or brush burnings, blowing dust or soils, and pollen spread, which were the main source of aerosols in the pre-industrial period. Since the Industrial Revolution began in the 18th century, the influence of human activity on aerosols greatly changed the chemical composition in urban and suburban areas; the predominant anthropogenic-derived primary sources of aerosols include vehicles exhausts, industrial emission, coal burning, biomass burning, cooking, etc., which substantially contribute black carbon, nitrate, sulfate, and organic aerosols to the ambient air, thus changing the air quality and atmospheric impact of aerosols. Aerosols in the atmosphere can also be produced from secondary chemical processes. The secondary formation mechanism of aerosols is very complex due to their complicated precursors and formation pathways, which has become a rapidly developing field in recent decades. In general, the fraction of different chemical components and the source contributions to aerosols in the atmosphere varies at different times and locations. A better characterization of aerosol chemical compositions and sources is key to elucidating their atmospheric fate, mitigating climate change, and protecting human health. For this Special Issue, the topics of interest include but are not limited to:
- Chemical and physical properties of aerosols;
- Chemical components and their mass fraction in aerosols;
- Different source contribution to aerosols;
- Formation and evolution mechanism of aerosols;
- The environmental impact of different components of aerosols.
Dr. Shan Huang
Dr. Wei Wei Hu
Guest Editors
Manuscript Submission Information
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Keywords
- chemical composition
- source apportionment
- organic aerosol
- secondary formation
- environmental impact
- primary emission
- anthropogenic/biogenic
- chemical evolution
- inorganic species
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