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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-7-1741-2007</article-id>
<title-group>
<article-title>Evaluation of organic markers for chemical mass balance source apportionment at the Fresno Supersite</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Chow</surname>
<given-names>J. C.</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>Watson</surname>
<given-names>J. G.</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>Lowenthal</surname>
<given-names>D. H.</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>Chen</surname>
<given-names>L. W. A.</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>Zielinska</surname>
<given-names>B.</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>Mazzoleni</surname>
<given-names>L. R.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Magliano</surname>
<given-names>K. L.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Desert Research Institute, Reno, NV, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Colorado State University, Fort Collins, CO, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>California Air Resources Board, Sacramento, CA, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>10</day>
<month>04</month>
<year>2007</year>
</pub-date>
<volume>7</volume>
<issue>7</issue>
<fpage>1741</fpage>
<lpage>1754</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/7/1741/2007/acp-7-1741-2007.html">This article is available from http://www.atmos-chem-phys.net/7/1741/2007/acp-7-1741-2007.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/7/1741/2007/acp-7-1741-2007.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/7/1741/2007/acp-7-1741-2007.pdf</self-uri>
<abstract>
<p>Sources of PM&lt;sub&gt;2.5&lt;/sub&gt; at the Fresno Supersite during high PM&lt;sub&gt;2.5&lt;/sub&gt;
episodes occurring from 15 December 2000&amp;ndash;3 February 2001 were estimated
with the Chemical Mass Balance (CMB) receptor model. The ability of source
profiles with organic markers to distinguish motor vehicle, residential wood
combustion (RWC), and cooking emissions was evaluated with simulated data.
Organics improved the distinction between gasoline and diesel vehicle
emissions and allowed a more precise estimate of the cooking source
contribution. Sensitivity tests using average ambient concentrations showed
that the gasoline vehicle contribution was not resolved without organics.
Organics were not required to estimate hardwood contributions. The most
important RWC marker was the water-soluble potassium ion. The estimated
cooking contribution did not depend on cholesterol because its
concentrations were below the detection limit in most samples. Winter time
source contributions were estimated by applying the CMB model to individual
and average sample concentrations. RWC was the largest source,
contributing 29&amp;ndash;31% of measured PM&lt;sub&gt;2.5&lt;/sub&gt;. Hardwood and softwood
combustion accounted for 16&amp;ndash;17% and 12&amp;ndash;15%, respectively. Secondary
ammonium nitrate and motor vehicle emissions accounted for 31&amp;ndash;33% and
9&amp;ndash;15%, respectively. The gasoline vehicle contribution (3&amp;ndash;10%) was
comparable to the diesel vehicle contribution (5&amp;ndash;6%). The cooking
contribution was 5&amp;ndash;19% of PM&lt;sub&gt;2.5&lt;/sub&gt;. Fresno source apportionment results
were consistent with those estimated in previous studies.</p>
</abstract>
<counts><page-count count="14"/></counts>
</article-meta>
</front>
<body/>
<back>
<ref-list>
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<label>52</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Robinson, N. F., Lewis, C. W., Coulter, C. T., Chow, J. C., Fujita, E. M., Conner, T. L., and Pace, T. G.: CMB8 applications and validation protocol for PM$_2.5$ and VOCs, prepared for U.S. Environmental Protection Agency, Research Triangle Park, NC by Desert Research Institute, Reno, NV, 1998b. </mixed-citation>
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<label>53</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., and Frazier, C. A.: X-ray fluorescence analysis of ambient air samples, in: Elemental Analysis of Airborne Particles, vol. 1, edited by: Landsberger, S. and Creatchman, M., Gordon and Breach Science, Amsterdam, 67&amp;ndash;96, 1999. </mixed-citation>
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<label>54</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., Bowen, J. L., Lowenthal, D. H., Hering, S., Ouchida, P., and Oslund, W.: Air quality measurements from the Fresno Supersite, J. Air Waste Manage. Assoc., 50(8), 1321&amp;ndash;1334, 2000. </mixed-citation>
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<label>55</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G. and Chow, J. C.: A wintertime PM$_2.5$ episode at the Fresno, CA, supersite, Atmos. Environ., 36(3), 465&amp;ndash;475, 2002. </mixed-citation>
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<label>56</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Zhu, T., Chow, J. C., Engelbrecht, J. P., Fujita, E. M., and Wilson, W. E.: Receptor modeling application framework for particle source apportionment, Chemosphere, 49(9), 1093&amp;ndash;1136, 2002a. </mixed-citation>
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<label>57</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., Lowenthal, D. H., Stolzenburg, M. R., Kreisberg, N. M., and Hering, S. V.: Particle size relationships at the Fresno supersite, J. Air Waste Manage. Assoc., 52(7), 822&amp;ndash;827, 2002b. </mixed-citation>
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<label>58</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G. and Chow, J. C.: Receptor models for air quality management, EM, 10, October, 27&amp;ndash;36, 2004. </mixed-citation>
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<label>59</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G. and Chow, J. C.: Receptor models, in: Air Quality Modeling &amp;ndash; Theories, Methodologies, Computational Techniques, and Available Databases and Software, vol. II &amp;ndash; Advanced Topics, edited by: Zannetti, P., Air Waste Manage. Assoc. and the EnviroComp Institute, Pittsburgh, PA, 455&amp;ndash;501, 2005. </mixed-citation>
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<label>60</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., and Chen, L.-W. A.: Summary of organic and elemental carbon/black carbon analysis methods and intercomparisons, Aerosol Air Quality Res., 5(1), 65&amp;ndash;102, 2005. </mixed-citation>
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<label>61</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., Lowenthal, D. H., Kreisberg, N., Hering, S. V., and Stolzenburg, M. R.: Variations of nanoparticle concentrations at the Fresno supersite, Sci. Total Environ., 358(1&amp;ndash;3), 178&amp;ndash;187, 2006a. </mixed-citation>
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<label>62</label><mixed-citation publication-type="other" xlink:type="simple"> Watson, J. G., Chow, J. C., Park, K., and Lowenthal, D. H.: Nanoparticle and ultrafine particle events at the Fresno Supersite, J. Air Waste Manage. Assoc., 56(4), 417&amp;ndash;430, 2006b. </mixed-citation>
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<label>63</label><mixed-citation publication-type="other" xlink:type="simple"> Zheng, M., Cass, G. R., Schauer, J. J., and Edgerton, E. S.: Source apportionment of PM$_2.5$ in the southeastern United States using solvent-extractable organic compounds as tracers, Environ. Sci. Technol., 36(11), 2361&amp;ndash;2371, 2002. </mixed-citation>
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<label>65</label><mixed-citation publication-type="other" xlink:type="simple"> Zielinska, B., McDonald, J. D., Hayes, T., Chow, J. C., Fujita, E. M., and Watson, J. G.: Northern Front Range Air Quality Study, Volume B: Source measurements, prepared for Colorado State University, Fort Collins, CO by Desert Research Institute, Reno, NV, 1998. </mixed-citation>
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<label>66</label><mixed-citation publication-type="other" xlink:type="simple"> Zielinska, B. and Fujita, E. M.: Characterization of ambient volatile organic compounds at the western boundary of the SCOS97-NARSTO modeling domain, Atmos. Environ., 37, Suppl. 2, S171&amp;ndash;S180, 2003. </mixed-citation>
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<label>67</label><mixed-citation publication-type="other" xlink:type="simple"> Zielinska, B., Rinehart, L. R., and Goliff, W. S.: California Regional PM$_10$/PM$_2.5$ Air Quality Study &amp;ndash; Organic compound measurements, prepared for California Air Resources Board, Sacramento, CA by Desert Research Institute, Reno, NV, 2003. </mixed-citation>
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</article>