<?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%">Wang, Y. J.</style></author><author><style face="normal" font="default" size="100%">Min* Hu</style></author><author><style face="normal" font="default" size="100%">Peng* Lin</style></author><author><style face="normal" font="default" size="100%">Guo, Q. F.</style></author><author><style face="normal" font="default" size="100%">ZJ Wu</style></author><author><style face="normal" font="default" size="100%">Li, M. R.</style></author><author><style face="normal" font="default" size="100%">L.M. Zeng</style></author><author><style face="normal" font="default" size="100%">Y. Song</style></author><author><style face="normal" font="default" size="100%">Zeng, L. W.</style></author><author><style face="normal" font="default" size="100%">Y.S. Wu</style></author><author><style face="normal" font="default" size="100%">Guo, S.</style></author><author><style face="normal" font="default" size="100%">Huang, X. F.</style></author><author><style face="normal" font="default" size="100%">He, L. Y.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Molecular Characterization of Nitrogen-Containing Organic Compounds in Humic-like Substances Emitted from Straw Residue Burning</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science &amp;amp; Technology Letters</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Environ Sci Technol</style></alt-title><short-title><style face="normal" font="default" size="100%">Environ. Sci. Technol.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">atmospheric aerosols</style></keyword><keyword><style  face="normal" font="default" size="100%">brown carbon</style></keyword><keyword><style  face="normal" font="default" size="100%">chemical-characterization</style></keyword><keyword><style  face="normal" font="default" size="100%">elemental composition</style></keyword><keyword><style  face="normal" font="default" size="100%">fine particulate matter</style></keyword><keyword><style  face="normal" font="default" size="100%">liquid-chromatography</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrate radicals</style></keyword><keyword><style  face="normal" font="default" size="100%">pearl river delta</style></keyword><keyword><style  face="normal" font="default" size="100%">resolution mass-spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary formation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jun 6</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">11</style></number><volume><style face="normal" font="default" size="100%">51</style></volume><pages><style face="normal" font="default" size="100%">5951-5961</style></pages><isbn><style face="normal" font="default" size="100%">0013-936X</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The molecular composition of humic-like[GRAPHIC]substances (HULIS) in different aerosol samples was analyzed using an ultrahigh-resolution mass spectrometer to investigate the influence of biomass burning on ambient aerosol composition. HULIS in background aerosols were characterized with numerous molecular formulas similar to biogenic secondary organic aerosols. The abundance of nitrogen-containing organic compounds (NOC), including nitrogen-containing bases (N-bases) and nitroaromatics, increased dramatically in ambient aerosols affected by crop residue burning in the farm field. The molecular distribution of N-bases in these samples exhibited similar patterns to those observed in smoke particles freshly emitted from lab-controlled burning of straw residues but were significantly different with those observed from wood burning. Signal intensity of the major N-bases correlated well with the atmospheric concentrations of potassium and levoglucosan. These N-bases can serve as molecular markers distinguishing HULIS from crop residue burning with from wood burning. More nitroaromatics were detected in ambient aerosols affected by straw burning than in fresh smoke aerosols, indicating that many of them are formed in secondary oxidation processes as smoke plumes evolve in the atmosphere. This study highlights the significant contribution of crop residue burning to atmospheric NOC. Further study is warranted to evaluate the roles of NOC on climate and human health.</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000403033600015</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;Ex2crTimes Cited:0Cited References Count:83&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">Peking Univ, Coll Environm Sci &amp;amp; Engn, State Key Joint Lab Environm Simulat &amp;amp; Pollut Con, Beijing 100871, Peoples R ChinaPeking Univ, Beijing Innovat Ctr Engn Sci &amp;amp; Adv Technol, Beijing 100871, Peoples R ChinaPeking Univ, Shenzhen Grad Sch, Sch Environm &amp;amp; Energy, Key Lab Urban Habitat Environm Sci &amp;amp; Technol, Shenzhen 518055, Peoples R ChinaHong Kong Univ Sci &amp;amp; Technol, Div Environm, Kowloon, Hong Kong, Peoples R ChinaHong Kong Univ Sci &amp;amp; Technol, Dept Chem, Kowloon, Hong Kong, Peoples R ChinaPacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99532 USA</style></auth-address></record></records></xml>