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Potential of select intermediate-volatility organic compounds and consumer products for secondary organic aerosol and ozone formation under relevant urban conditions

Li, Weihua and Li, Lijie and Chen, Chia-Li and Kacarab, Mary and Peng, Weihan and Price, Derek and Xu, Jin and Cocker, David R., III (2018) Potential of select intermediate-volatility organic compounds and consumer products for secondary organic aerosol and ozone formation under relevant urban conditions. Atmospheric Environment, 178 . pp. 109-117. ISSN 1352-2310 . http://resolver.caltech.edu/CaltechAUTHORS:20180411-114500086

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Abstract

Emissions of certain low vapor pressure-volatile organic compounds (LVP-VOCs) are considered exempt to volatile organic compounds (VOC) regulations due to their low evaporation rates. However, these compounds may still play a role in ambient secondary organic aerosol (SOA) and ozone formation. The LVP-VOCs selected for this work are categorized as intermediate-volatility organic compounds (IVOCs) according to their vapor pressures and molecular formulas. In this study, the evaporation rates of 14 select IVOCs are investigated with half of them losing more than 95% of their mass in less than one month. Further, SOA and ozone formation are presented from 11 select IVOCs and 5 IVOC-containing generic consumer products under atmospherically relevant conditions using varying radical sources (NO_x and/or H_2O_2) and a surrogate reactive organic gas (ROG) mixture. Benzyl alcohol (0.41), n-heptadecane (0.38), and diethylene glycol monobutyl ether (0.16) are determined to have SOA yields greater than 0.1 in the presence of NO_x and a surrogate urban hydrocarbon mixture. IVOCs also influence ozone formation from the surrogate urban mixture by impacting radical levels and NO_x availability. The addition of lab created generic consumer products has a weak influence on ozone formation from the surrogate mixture but strongly affects SOA formation. The overall SOA and ozone formation of the generic consumer products could not be explained solely by the results of the pure IVOC experiments.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.atmosenv.2017.12.019DOIArticle
https://www.sciencedirect.com/science/article/pii/S1352231017308609PublisherArticle
ORCID:
AuthorORCID
Cocker, David R., III0000-0002-0586-0769
Additional Information:© 2017 Published by Elsevier Ltd. Received 28 August 2017, Revised 10 December 2017, Accepted 15 December 2017, Available online 2 February 2018. We acknowledge funding support from CARB (Contract#: 13-302). The statements and opinions expressed in this paper are solely the authors' and do not represent the official position of the CARB. The mention of trade names, products, and organizations does not constitute endorsement or recommendation for use.
Funders:
Funding AgencyGrant Number
California Air Resources Board13-302
Subject Keywords:Intermediate-volatility organic compounds; IVOC; Consumer products; Secondary organic aerosol; Ozone; Atmospheric availability
Record Number:CaltechAUTHORS:20180411-114500086
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180411-114500086
Official Citation:Weihua Li, Lijie Li, Chia-li Chen, Mary Kacarab, Weihan Peng, Derek Price, Jin Xu, David R. Cocker, Potential of select intermediate-volatility organic compounds and consumer products for secondary organic aerosol and ozone formation under relevant urban conditions, Atmospheric Environment, Volume 178, 2018, Pages 109-117, ISSN 1352-2310, https://doi.org/10.1016/j.atmosenv.2017.12.019. (http://www.sciencedirect.com/science/article/pii/S1352231017308609)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85756
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:11 Apr 2018 20:30
Last Modified:11 Apr 2018 20:30

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