<?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%">MN  Chan</style></author><author><style face="normal" font="default" size="100%">Surratt, J. D.</style></author><author><style face="normal" font="default" size="100%">M Claeys</style></author><author><style face="normal" font="default" size="100%">ES Edgerton</style></author><author><style face="normal" font="default" size="100%">RL Tanner</style></author><author><style face="normal" font="default" size="100%">SL Shaw</style></author><author><style face="normal" font="default" size="100%">M* Zheng</style></author><author><style face="normal" font="default" size="100%">EM Knipping</style></author><author><style face="normal" font="default" size="100%">Eddingsaas NC</style></author><author><style face="normal" font="default" size="100%">Wennberg PO</style></author><author><style face="normal" font="default" size="100%">Seinfeld JH*</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Characterization and quantification of Isoprene-derived Epoxydiols in ambient aerosol in the southeastern United States</style></title><secondary-title><style face="normal" font="default" size="100%">Environ. Sci. Technol.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://xueshu.baidu.com/s?wd=paperuri%3A%28daa91c81954192a6196e1bb12fc86057%29&amp;filter=sc_long_sign&amp;tn=SE_xueshusource_2kduw22v&amp;sc_vurl=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpubmed%3Fcmd%3DRetrieve%26amp%3Blist_uids%3D20476767&amp;ie=utf-8&amp;sc_us=2801896984191234</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">44</style></volume><pages><style face="normal" font="default" size="100%">4590-4596</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Isoprene-derived epoxydiols (IEPOX) are identified in ambient aerosol samples for the first time, together with other previously identified isoprene tracers (i.e., 2-methyltetrols, 2-methylglyceric acid, C(5)-alkenetriols, and organosulfate derivatives of 2-methyltetrols). Fine ambient aerosol collected in downtown Atlanta, GA and rural Yorkville, GA during the 2008 August Mini-Intensive Gas and Aerosol Study (AMIGAS) was analyzed using both gas chromatography/quadrupole mass spectrometry (GC/MS) and gas chromatography/time-of-flight mass spectrometry (GC/TOFMS) with prior trimethylsilylation. Mass concentrations of IEPOX ranged from approximately 1 to 24 ng m(-3) in the aerosol collected from the two sites. Detection of particle-phase IEPOX in the AMIGAS samples supports recent laboratory results that gas-phase IEPOX produced from the photooxidation of isoprene under low-NO(x) conditions is a key precursor of ambient isoprene secondary organic aerosol (SOA) formation. On average, the sum of the mass concentrations of IEPOX and the measured isoprene SOA tracers accounted for about 3% of the organic carbon, demonstrating the significance of isoprene oxidation to the formation of ambient aerosol in this region.&lt;/p&gt;</style></abstract></record></records></xml>