Secondary Organic Aerosol Formation and Organic Nitrate Yield from NO3 Oxidation of Biogenic Hydrocarbons

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• 作者：Juliane L. Fry ; Danielle C. Draper ; Kelley C. Barsanti ; James N. Smith ; John Ortega ; Paul M. Winkler ; Michael J. Lawler ; Steven S. Brown ; Peter M. Edwards ; Ronald C. Cohen ; Lance Lee
• 刊名：Environmental Science & Technology
• 出版年：2014
• 出版时间：October 21, 2014
• 年：2014
• 卷：48
• 期：20
• 页码：11944-11953
• 全文大小：409K
• ISSN：1520-5851

文摘

The secondary organic aerosol (SOA) mass yields from NO₃ oxidation of a series of biogenic volatile organic compounds (BVOCs), consisting of five monoterpenes and one sesquiterpene (伪-pinene, 尾-pinene, 螖-3-carene, limonene, sabinene, and 尾-caryophyllene), were investigated in a series of continuous flow experiments in a 10 m³ indoor Teflon chamber. By making in situ measurements of the nitrate radical and employing a kinetics box model, we generate time-dependent yield curves as a function of reacted BVOC. SOA yields varied dramatically among the different BVOCs, from zero for 伪-pinene to 38鈥?5% for 螖-3-carene and 86% for 尾-caryophyllene at mass loading of 10 渭g m^鈥?, suggesting that model mechanisms that treat all NO₃ + monoterpene reactions equally will lead to errors in predicted SOA depending on each location鈥檚 mix of BVOC emissions. In most cases, organonitrate is a dominant component of the aerosol produced, but in the case of 伪-pinene, little organonitrate and no aerosol is formed.