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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ACPD</journal-id>
<journal-title-group>
<journal-title>Atmospheric Chemistry and Physics Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">ACPD</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7375</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/acpd-10-153-2010</article-id>
<title-group>
<article-title>Fast two-dimensional GC-MS with thermal extraction for anhydro-sugars in fine aerosols</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ma</surname>
<given-names>Y.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</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>Hays</surname>
<given-names>M. D.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Geron</surname>
<given-names>C. D.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Walker</surname>
<given-names>J. T.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Gatari Gichuru</surname>
<given-names>M. J.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>National Risk Management Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Institute of Nuclear Science &amp; Technology, College of Architecture and Engineering, University of Nairobi, Nairobi, Kenya</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>now at: California Air Resources Board, 9528 Telstar Avenue, El Monte, CA 91731, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>05</day>
<month>01</month>
<year>2010</year>
</pub-date>
<volume>10</volume>
<issue>1</issue>
<fpage>153</fpage>
<lpage>182</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-discuss.net/10/153/2010/acpd-10-153-2010.html">This article is available from http://www.atmos-chem-phys-discuss.net/10/153/2010/acpd-10-153-2010.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys-discuss.net/10/153/2010/acpd-10-153-2010.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/10/153/2010/acpd-10-153-2010.pdf</self-uri>
<abstract>
<p>A fast two-dimensional gas chromatography (GC-MS) method that uses heart-cutting and thermal
      extraction (TE) and requires no chemical derivatization was developed for the determination
      of anhydro-sugars in fine aerosols. Evaluation of the TE-GC-GC-MS method shows high average
      relative accuracy (&amp;ge;90%), reproducibility (&amp;le;10% relative standard
      deviation), detection limits of less than 3 ng/μL, and negligible carryover for
      levoglucosan, mannosan, and galactosan markers. TE-GC-GC-MS- and solvent extraction
      (SE)-GC-MS-measured levoglucosan concentrations correlate across several diverse types of
      biomass burning aerosols. Because the SE-GC-MS measurements were taken 8 years prior to the
      TE-GC-GC-MS ones, the stability of levoglucosan is established for quartz filter-collected
      biomass burning aerosol samples stored at ultra-low temperature
      (&amp;ndash;45&amp;deg;C). Levoglucosan concentrations (w/w) in aerosols collected following
      atmospheric dilution near open fires of varying intensity are similar to those in biomass
      burning aerosols produced in a laboratory enclosure. An average
      levoglucosan-mannosan-galactosan ratio of 15:2:1 is observed for these two aerosol
      sets. TE-GC-GC-MS analysis of atmospheric aerosols from the US and Africa produced
      levoglucosan concentrations (0.01–1.6 μg/m&lt;sup&gt;3&lt;/sup&gt;) well within those reported for
      aerosols collected globally and examined using different analytical techniques
      (0.004–7.6 μg/m&lt;sup&gt;3&lt;/sup&gt;). Further comparisons among techniques suggest that fast
      TE-GC-GC-MS is among the most sensitive, accurate, and precise methods for compound-specific
      quantification of anhydro-sugars. In addition, an approximately twofold increase in aerosol
      sample throughput may be realized when combining TE with fast chromatography for
      anhydro-sugar determination.</p>
</abstract>
<counts><page-count count="30"/></counts>
</article-meta>
</front>
<body/>
<back>
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