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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-10-4331-2010</article-id>
<title-group>
<article-title>Technical Note: 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>currently at: California Air Resources Board, 9528 Telstar Avenue, El Monte, CA 91731, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>07</day>
<month>05</month>
<year>2010</year>
</pub-date>
<volume>10</volume>
<issue>9</issue>
<fpage>4331</fpage>
<lpage>4341</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>
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<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/&amp;mu;L, 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;minus;50 &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 &amp;mu;g/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 &amp;mu;g/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 anhydro-sugar determination may be
realized when combining TE with fast chromatography.</p>
</abstract>
<counts><page-count count="11"/></counts>
</article-meta>
</front>
<body/>
<back>
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