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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ACP</journal-id>
<journal-title-group>
<journal-title>Atmospheric Chemistry and Physics</journal-title>
<abbrev-journal-title abbrev-type="publisher">ACP</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7324</issn>
<publisher><publisher-name>Copernicus GmbH</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/acp-11-10649-2011</article-id>
<title-group>
<article-title>Secondary organic aerosol formation from phenolic compounds in the absence of NO&lt;sub&gt;x&lt;/sub&gt;</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Nakao</surname>
<given-names>S.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Clark</surname>
<given-names>C.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Tang</surname>
<given-names>P.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Sato</surname>
<given-names>K.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Cocker III</surname>
<given-names>D.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>University of California, Riverside, Department of Chemical and Environmental Engineering, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>College of Engineering – Center for Environmental Research and Technology (CE-CERT), USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>currently at: National Institute for Environmental Studies, Japan</addr-line>
</aff>
<pub-date pub-type="epub">
<day>27</day>
<month>10</month>
<year>2011</year>
</pub-date>
<volume>11</volume>
<issue>20</issue>
<fpage>10649</fpage>
<lpage>10660</lpage>
<permissions>
<license xlink:type="simple">
<license-p>This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p>
</license>
</permissions>
<self-uri xlink:href="http://www.atmos-chem-phys.net/11/10649/2011/acp-11-10649-2011.html">This article is available from http://www.atmos-chem-phys.net/11/10649/2011/acp-11-10649-2011.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/11/10649/2011/acp-11-10649-2011.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/11/10649/2011/acp-11-10649-2011.pdf</self-uri>
<abstract>
<p>SOA formation from benzene, toluene, &lt;i&gt;m&lt;/i&gt;-xylene, and their corresponding
phenolic compounds were investigated using the UCR/CE-CERT Environmental
Chamber to evaluate the importance of phenolic compounds as intermediate
species in aromatic SOA formation. SOA formation yield measurements coupled
to gas-phase yield measurements indicate that approximately 20% of the
SOA of benzene, toluene, and &lt;i&gt;m&lt;/i&gt;-xylene could be ascribed to the phenolic route
under low NO&lt;sub&gt;x&lt;/sub&gt; conditions. The SOA densities tend to be initially as
high as approximately 1.8 g cm&lt;sup&gt;&amp;minus;3&lt;/sup&gt; and eventually reach the range of
1.3–1.4 g cm&lt;sup&gt;&amp;minus;3&lt;/sup&gt;. The final SOA density was found to be independent of
elemental ratio (O/C) indicating that applying constant density (e.g., 1.4 g cm&lt;sup&gt;&amp;minus;3&lt;/sup&gt;)
 to SOA formed from different aromatic compounds tested in this
study is a reasonable approximation. Results from a novel on-line PILS-TOFMS
(Particle-into-Liquid Sampler coupled with Agilent Time-of-Flight Mass
Spectrometer) are reported. Major signals observed by the on-line/off-line
Agilent TOFMS indicated that products had the same number of carbon atoms as
their parent aromatics, suggesting importance of ring-retaining products or
ring-opening products following ring-cleavage.</p>
</abstract>
<counts><page-count count="12"/></counts>
</article-meta>
</front>
<body/>
<back>
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