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http://hdl.handle.net/10397/88721
Title: | Surface characterization of secondary organic aerosols from ozonolysis of monoterpene and the effects of acute lung injury in mice | Authors: | Niu, XY Huang, Y Lee, SC Sun, J Ho, KF |
Issue Date: | Jul-2020 | Source: | Aerosol and air quality research, July 2020, , v. 20, no. 7, p. 1675-1685 | Abstract: | Monoterpene is a biogenic volatile organic compound commonly found in cleaning products and air fresheners. It can react rapidly with indoor oxidants, such as ozone (O-3), to produce secondary organic aerosols (SOAs) in indoor environments, and the reactions are potentially influenced by ammonia (NH3). This study simulated the reactions of O-3 and monoterpene with and without the presence of NH3 in an environmental chamber and investigated the surface characterization (elemental components and carbon states) of the PM2.5 generated by these reactions. We found that the generated particles possessed a higher content of nitrogen-containing organic compounds when NH3 was present. Unsubstituted aromatic carbon and aliphatic carbon were the main carbon structures, exhibited by over 60% of the carbon-containing compounds. Additionally, in the presence of NH3, more amide carbon and carboxylic carbon formed during the reactions. We also examined acute lung injury in mice caused by new particle formation under different reaction conditions. Oxidative stress was observed in the bronchoalveolar lavage fluid of the mice, as evidenced by a decrease in antioxidant enzymes (superoxide dismutase) and antioxidants (glutathione) as well as an increase in malondialdehyde. Moreover, the SOAs generated in the presence of NH3 lowered glutathione levels, indicating a rise in oxidative stress. Hence, fine particles formed by indoor oxidative reactions may trigger acute lung injury in humans, potentially causing further respiratory disease. | Keywords: | Indoor air pollution SOA Oxidative stress Acute lung injury |
Publisher: | Chinese Association for Aerosol Research in Taiwan | Journal: | Aerosol and air quality research | ISSN: | 1680-8584 | DOI: | 10.4209/aaqr.2019.12.0628 | Rights: | Copyright The Author's institution. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited. The following publication Niu, X., Huang, Y., Lee, S.C., Sun, J. and Ho, K.F. (2020). Surface Characterization of Secondary Organic Aerosols from Ozonolysis of Monoterpene and the Effects of Acute Lung Injury in Mice. Aerosol Air Qual. Res. 20: 1675–1685 is available at https://dx.doi.org/10.4209/aaqr.2019.12.0628 |
Appears in Collections: | Journal/Magazine Article |
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