| Title: | Anthropogenic-Biogenic Interactions at Night: Enhanced Formation of Secondary Aerosols and Particulate Nitrogen- and Sulfur-Containing Organics from beta-Pinene Oxidation |
| Author(s): | Xu L; Yang Z; Tsona NT; Wang X; George C; Du L; |
| Address: | "Environment Research Institute, Shandong University, Qingdao 266237, China. Universite Lyon, Universite Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Mixing of anthropogenic gaseous pollutants and biogenic volatile organic compounds impacts the formation of secondary aerosols, but still in an unclear manner. The present study explores secondary aerosol formation via the interactions between beta-pinene, O(3), NO(2), SO(2), and NH(3) under dark conditions. Results showed that aerosol yield can be largely enhanced by more than 330% by NO(2) or SO(2) but slightly enhanced by NH(3) by 39% when the ratio of inorganic gases to beta-pinene ranged from 0 to 1.3. Joint effects of NO(2) and SO(2) and SO(2) and NH(3) existed as aerosol yields increased with NO(2) but decreased with NH(3) when SO(2) was kept constant. Infrared spectra showed nitrogen-containing aerosol components derived from NO(2) and NH(3) and sulfur-containing species derived from SO(2). Several particulate organic nitrates (MW 215, 229, 231, 245), organosulfates (MW 250, 264, 280, 282, 284), and nitrooxy organosulfates (MW 295, 311, 325, 327, and 343) were identified using high-resolution orbitrap mass spectrometry in NO(2) and SO(2) experiments, and their formation mechanism is discussed. Most of these nitrogen- and sulfur-containing species have been reported in ambient particles. Our results suggest that the complex interactions among beta-pinene, O(3), NO(2), SO(2), and NH(3) during the night might serve as a potential pathway for the formation of particulate nitrogen- and sulfur-containing organics, especially in polluted regions with both anthropogenic and biogenic influences" |
| Keywords: | Aerosols *Air Pollutants/analysis Bicyclic Monoterpenes Nitrogen Sulfur anthropogenic-biogenic interactions night time ozonolysis nitrooxy organosulfates organic nitrates secondary aerosol beta-pinene; |
| Notes: | "MedlineXu, Li Yang, Zhaomin Tsona, Narcisse T Wang, Xinke George, Christian Du, Lin eng Research Support, Non-U.S. Gov't 2021/05/29 Environ Sci Technol. 2021 Jun 15; 55(12):7794-7807. doi: 10.1021/acs.est.0c07879. Epub 2021 May 27" |
