Photochemical aging of Beijing urban PM2.5 : Production of oxygenated volatile organic compounds

The Science of the Total Environment
Hongling XiaJincai Zhao

Abstract

PM2.5 has become the dominant atmospheric pollutant in many countries. Many components of PM2.5 are highly photoactive. However, the photochemical aging of PM2.5 remains poorly understood. In this study, the photoaging of real PM2.5 samples collected from 2017 to 2018 in Beijing under simulated solar radiation (λ ~ 340-850 nm) was investigated. Our study showed that large amounts of oxygenated volatile organic compounds (OVOCs), such as acetaldehyde, formic acid, acetone and acetic acid, were released during the photochemical aging of PM2.5. Furthermore, although a positive correlation between the OVOCs yield and the organic matter (OM) in PM2.5 was observed, the product distribution from the photoaging of PM2.5 was different from that in the direct photolysis of artificially synthesized SOA. Because of the release of OVOCs, the PM2.5 mass loss was evaluated to be ~1.80% per day under typical atmospheric conditions. The OVOCs released during the photoaging of PM2.5 may contribute substantially to the OVOCs sources omitted from troposphere chemistry models and may have a significant effect on the OVOCs distribution and oxidation capacity of the atmosphere.

References

Aug 9, 2005·The Science of the Total Environment·Ling-Yan HeXiao-Yan Tang
Aug 15, 2008·The Journal of Physical Chemistry. a·Stephen A MangSergey A Nizkorodov
Sep 4, 2009·Physical Chemistry Chemical Physics : PCCP·Scott Cowen, Hind A Al-Abadleh
Dec 17, 2009·Science·J L JimenezD R Worsnop
Jan 8, 2011·The Journal of Physical Chemistry. a·Haihan ChenVicki H Grassian
Jun 22, 2011·Proceedings of the National Academy of Sciences of the United States of America·Manabu ShiraiwaUlrich Pöschl
Jul 20, 2011·Environmental Science & Technology·Wentao WangStaci L Massey Simonich
Aug 8, 2014·Environmental Science & Technology·Hyun Ji Julie LeeSergey A Nizkorodov
Aug 15, 2014·Environmental Science & Technology·Liping QiaoHaidong Kan
Aug 29, 2014·Environmental Science & Technology·Scott A EpsteinSergey A Nizkorodov
Sep 10, 2014·Proceedings of the National Academy of Sciences of the United States of America·Hanna LignellSergey A Nizkorodov
Oct 17, 2014·Scientific Reports·Wei NieMarkku Kulmala
Mar 17, 2015·Chemical Reviews·Christian GeorgeSergey A Nizkorodov
May 6, 2015·Chemical Reviews·Renyi ZhangYuan Wang
Apr 2, 2016·Proceedings of the National Academy of Sciences of the United States of America·Jianfei PengRenyi Zhang
Aug 23, 2016·Environmental Science & Technology·Kurtis T Malecha, Sergey A Nizkorodov
Feb 2, 2017·Environmental Science & Technology·Rongrong Wu, Shaodong Xie
Apr 22, 2017·Nature Communications·Manabu ShiraiwaUlrich Pöschl
Jun 18, 2017·Environmental Science & Technology·Cong LiuHaidong Kan
Oct 5, 2017·Chemical Reviews·Bin YuanJoost A de Gouw
Oct 29, 2017·Proceedings of the National Academy of Sciences of the United States of America·Xiaoyuan LiDenise L Mauzerall
Feb 28, 2018·Nature Chemistry·Gabriel Isaacman-VanWertzJesse H Kroll
Mar 30, 2018·Environmental Science & Technology·Milena Ponczek, Christian George
May 2, 2018·Environmental Science & Technology·Fengxia BaoJincai Zhao
Jun 14, 2018·Environmental Science & Technology·Pablo Corral ArroyoMarkus Ammann
Jul 11, 2018·Proceedings of the National Academy of Sciences of the United States of America·Meng LiJincai Zhao
Nov 28, 2018·Physical Chemistry Chemical Physics : PCCP·Pablo Corral ArroyoSergey A Nizkorodov
Feb 23, 2020·Environmental Science & Technology·Fengxia BaoJincai Zhao

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.