<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Q. Wang</style></author><author><style face="normal" font="default" size="100%">Shao, M.</style></author><author><style face="normal" font="default" size="100%">Y. Zhang</style></author><author><style face="normal" font="default" size="100%">Wei, Y.</style></author><author><style face="normal" font="default" size="100%">Hu, M.</style></author><author><style face="normal" font="default" size="100%">Guo, S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Source apportionment of fine organic aerosols in Beijing</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Chemistry and PhysicsAtmospheric Chemistry and Physics</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Atmos Chem Phys</style></alt-title><short-title><style face="normal" font="default" size="100%">Atmos. Chem. Phys.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air-pollution sources</style></keyword><keyword><style  face="normal" font="default" size="100%">chinese cooking</style></keyword><keyword><style  face="normal" font="default" size="100%">coal combustion</style></keyword><keyword><style  face="normal" font="default" size="100%">emission factors</style></keyword><keyword><style  face="normal" font="default" size="100%">molecular tracers</style></keyword><keyword><style  face="normal" font="default" size="100%">particles</style></keyword><keyword><style  face="normal" font="default" size="100%">particulate matter</style></keyword><keyword><style  face="normal" font="default" size="100%">pm2.5</style></keyword><keyword><style  face="normal" font="default" size="100%">polycyclic aromatic-hydrocarbons</style></keyword><keyword><style  face="normal" font="default" size="100%">seasonal trends</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><number><style face="normal" font="default" size="100%">21</style></number><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">8573-8585</style></pages><isbn><style face="normal" font="default" size="100%">1680-7316</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">Fine particles (PM2.5, i.e., particles with an aerodynamic diameter of &lt;= 2.5 mu m) were collected from the air in August 2005, August-September 2006, and January-February 2007, in Beijing, China. The chemical compositions of particulate organic matter in the ambient samples were quantified by gas chromatography/mass spectrometry. The dominant compounds identified in summertime were n-alkanoic acids, followed by dicarboxylic acids and sugars, while sugars became the most abundant species in winter, followed by polycyclic aromatic hydrocarbons, n-alkanes, and n-alkanoic acids. The contributions of seven emission sources (i.e., gasoline/diesel vehicles, coal burning, wood/straw burning, cooking, and vegetative detritus) to particulate organic matter in PM2.5 were estimated using a chemical mass balance receptor model. The model results present the seasonal trends of source contributions to organic aerosols. Biomass burning (straw and wood) had the highest contribution in winter, followed by coal burning, vehicle exhaust, and cooking. The contribution of cooking was the highest in summer, followed by vehicle exhaust and biomass burning, while coal smoke showed only a minor contribution to ambient organic carbon.</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000271715500029</style></accession-num><notes><style face="normal" font="default" size="100%">518TDTimes Cited:0Cited References Count:51</style></notes><auth-address><style face="normal" font="default" size="100%">Shao, MPeking Univ, Coll Environm Sci &amp; Engn, State Joint Key Lab Environm Simulat &amp; Pollut Con, Beijing 100871, Peoples R ChinaPeking Univ, Coll Environm Sci &amp; Engn, State Joint Key Lab Environm Simulat &amp; Pollut Con, Beijing 100871, Peoples R ChinaPeking Univ, Coll Environm Sci &amp; Engn, State Joint Key Lab Environm Simulat &amp; Pollut Con, Beijing 100871, Peoples R China</style></auth-address></record></records></xml>