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Measurements of Isoprene-Derived Organosulfates in Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry—Part 2: Temporal Variability and Formation Mechanisms

Hatch, Lindsay E. and Creamean, Jessie M. and Ault, Andrew P. and Surratt, Jason D. and Chan, Man Nin and Seinfeld, John H. and Edgerton, Eric S. and Su, Yongxuan and Prather, Kimberly A. (2011) Measurements of Isoprene-Derived Organosulfates in Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry—Part 2: Temporal Variability and Formation Mechanisms. Environmental Science and Technology, 45 (20). pp. 8648-8655. ISSN 0013-936X. https://resolver.caltech.edu/CaltechAUTHORS:20111128-115220934

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Abstract

Organosulfate species have recently gained attention for their potentially significant contribution to secondary organic aerosol (SOA); however, their temporal behavior in the ambient atmosphere has not been probed in detail. In this work, organosulfates derived from isoprene were observed in single particle mass spectra in Atlanta, GA during the 2002 Aerosol Nucleation and Characterization Experiment (ANARChE) and the 2008 August Mini-Intensive Gas and Aerosol Study (AMIGAS). Real-time measurements revealed that the highest organosulfate concentrations occurred at night under a stable boundary layer, suggesting gas-to-particle partitioning and subsequent aqueous-phase processing of the organic precursors played key roles in their formation. Further analysis of the diurnal profile suggests possible contributions from multiple production mechanisms, including acid-catalysis and radical-initiation. This work highlights the potential for additional SOA formation pathways in biogenically influenced urban regions to enhance the organic aerosol burden.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/es2011836DOIArticle
http://pubs.acs.org/doi/abs/10.1021/es2011836PublisherArticle
ORCID:
AuthorORCID
Creamean, Jessie M.0000-0003-3819-5600
Ault, Andrew P.0000-0002-7313-8559
Surratt, Jason D.0000-0002-6833-1450
Chan, Man Nin0000-0002-2384-2695
Seinfeld, John H.0000-0003-1344-4068
Additional Information:© 2011 American Chemical Society. Published In Issue October 15, 2011; Article ASAP: September 09, 2011; Received: April 09, 2011; Accepted: August 02, 2011; Revised: July 11, 2011. We gratefully acknowledge Stephanie Shaw and Eladio Knipping (EPRI) for coordinating the AMIGAS campaign. The authors thank the rest of the Prather group for extensive support throughout the studies. Additional assistance in Atlanta from Jerry Brown (ARA, Inc.) was appreciated during AMIGAS. Water-soluble organic carbon measurements were provided by Xiaolu Zhang and Prof. Rodney Weber (Georgia Institute of Technology). Michele Sipin is acknowledged for assisting with data collection during ANARChE. The authors thank anonymous reviewers for insightful comments. ANARChE was supported by the University of Rochester EPA PM Center, Grant R827354. AMIGAS was funded by the Electric Power Research Institute. L.H. has been funded by a National Science Foundation Graduate Research Fellowship (2008-2011).
Funders:
Funding AgencyGrant Number
Environmental Protection Agency (EPA)R827354
Electric Power Research Institute (EPRI)UNSPECIFIED
NSF Graduate Research FellowshipUNSPECIFIED
Issue or Number:20
Record Number:CaltechAUTHORS:20111128-115220934
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20111128-115220934
Official Citation:Measurements of Isoprene-Derived Organosulfates in Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry—Part 2: Temporal Variability and Formation Mechanisms Lindsay E. Hatch, Jessie M. Creamean, Andrew P. Ault, Jason D. Surratt, Man Nin Chan, John H. Seinfeld, Eric S. Edgerton, Yongxuan Su, and Kimberly A. Prather Environmental Science & Technology 2011 45 (20), 8648-8655
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27977
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:28 Nov 2011 22:10
Last Modified:03 Oct 2019 03:28

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