Heterogeneous SOA yield from ozonolysis of monoterpenes in the presence of inorganic acid |
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| Institution: | 1. Cain Department of Chemical Engineering, Louisiana State University, 110 Chemical Engineering, South Stadium Rd., Baton Rouge, LA 70803, USA;2. Department of Land, Air and Water Resources, University of California, Plant and Environmental Science Bldg. 1110, One Shields Ave., Davis, CA 95616, USA;1. Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry & Environment, Minnan Normal University, Zhangzhou, 363000, China;2. College of Environmental Science and Engineering, Xiamen University, Tan Kah Kee College, Zhangzhou, 363105, China;3. Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, China;1. University of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA;2. University of Wisconsin-Madison, Environmental Chemistry and Technology Program, Madison, WI, USA;3. Harvard University, Department of Pediatrics, Boston, MA, USA |
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| Abstract: | The secondary organic aerosol (SOA) yield of a series of montoerpenes was investigated to determine the relative amounts of organic mass, which can be attributed to mass produced by heterogeneous acid-catalyzed reactions. Five monoterpenes (α-pinene, terpinolene, d-limonene, Δ2-carene, β-pinene) were studied using a 2 m3 indoor Teflon chamber and SOA was created in the presence of both acidic and neutral inorganic seed aerosol. The relative humidity was varied to create differing acidic seed environments. The heterogeneous aerosol production was influenced by the seed mass concentration, the acidity of the inorganic seed aerosol, and also molecular structure of the monoterpene ozonolysis products. This study also can be incorporated with our previously presented model of the kinetic expression for SOA mass production from heterogeneous acid-catalyzed reactions. |
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