Indoor Secondary Organic Aerosol Formation Initiated from Reactions between Ozone and Surface-Sorbed d-Limonene
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- 作者：Michael S. Waring ; Jeffrey A. Siegel
- 刊名：Environmental Science & Technology (ES&T)
- 出版年：2013
- 出版时间：June 18, 2013
- 年：2013
- 卷：47
- 期：12
- 页码：6341-6348
- 全文大小：381K
- 年卷期：v.47,no.12(June 18, 2013)
- ISSN：1520-5851
文摘
Reactions between ozone and terpenoids produce numerous products, some of which may form secondary organic aerosol (SOA). This work investigated the contribution to gas-phase SOA formation of ozone reactions with surface-sorbed d-limonene, which is common indoors. A model framework was developed to predict SOA mass formation because of ozone/terpenoid surface reactions, and it was used with steady state experiments in a 283 L chamber to determine the aerosol mass fraction of SOA resulting from surface reactions, 尉s (the ratio of mass of SOA formed and mass of ozone consumed by ozone/terpenoid surface reactions), for ozone/d-limonene reactions on stainless steel. The 尉s = 0.70鈥?.91, with lower relative humidity leading to both higher mass and number formation. Also, surface reactions promoted nucleation more than gas-phase reactions, and number formation due to surface reactions and gas-phase reactions were 126鈥?39 and 51.1鈥?0.2 no./cm3 per 渭g/m3 of formed SOA, respectively. We also used the model framework to predict that indoor spaces in which ozone/d-limonene surface reactions would likely lead to meaningful gas-phase SOA formation are those with surfaces that have low original reactivity with ozone, such as glass, sealed materials, or smooth metals.