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<article language="en">
	<journal>
		<journal_title>Atmospheric Chemistry and Physics Discussions</journal_title>
		<journal_url>www.atmos-chem-phys-discuss.net</journal_url>
		<issn>1680-7367</issn>
		<eissn>1680-7375</eissn>
		<volume_number>9</volume_number>
		<issue_number>2</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/acpd-9-9457-2009</doi>
	<article_url>http://www.atmos-chem-phys-discuss.net/9/9457/2009/</article_url>
	<abstract_html>http://www.atmos-chem-phys-discuss.net/9/9457/2009/acpd-9-9457-2009.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys-discuss.net/9/9457/2009/acpd-9-9457-2009.pdf</fulltext_pdf>
	<start_page>9457</start_page>
	<end_page>9489</end_page>
	<publication_date>2009-04-09</publication_date>
	<article_title content_type="html">Modeling of secondary organic aerosol yields from laboratory chamber data</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>M. N. Chan</name>
		</author>
		<author numeration="2" affiliations="2">
			<name>A. W. H. Chan</name>
		</author>
		<author numeration="3" affiliations="2">
			<name>P. S. Chhabra</name>
		</author>
		<author numeration="4" affiliations="2">
			<name>J. D. Surratt</name>
		</author>
		<author numeration="5" affiliations="1,2">
			<name>J. H. Seinfeld</name>
			<email>seinfeld@caltech.edu</email>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Division of Engineering and Applied Science, California Institute of Technology,  Pasadena, CA, USA</affiliation>
		<affiliation numeration="2" content_type="html">Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA</affiliation>
	</affiliations>
	<abstract content_type="html">A product-specific model for secondary organic aerosol (SOA) formation and composition based
      on equilibrium gas-particle partitioning is evaluated.  The model is applied to represent
      laboratory data on the ozonolysis of Î±-pinene under dry, dark, and low-NO&lt;sub&gt;x&lt;/sub&gt;
      conditions in the presence of ammonium sulfate seed aerosol.  Using five major identified
      products, the model is fit to the chamber data. From the optimal fitting, SOA
      oxygen-to-carbon (O/C) and hydrogen-to-carbon (H/C) ratios are
      modeled. The discrepancy between measured H/C ratios and those based on the
      oxidation products used in the model fitting suggests the potential importance of
      particle-phase reactions. Data fitting is also carried out using the volatility basis set,
      wherein oxidation products are parsed into volatility bins. The product-specific model is
      best used for an SOA precursor for which a substantial fraction of the aerosol-phase
      oxidation products has been identified.</abstract>
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</article>

