<?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, H. C.</style></author><author><style face="normal" font="default" size="100%">Lu, K. D.</style></author><author><style face="normal" font="default" size="100%">Chen, X. R.</style></author><author><style face="normal" font="default" size="100%">Zhu, Q. D.</style></author><author><style face="normal" font="default" size="100%">Q. Chen</style></author><author><style face="normal" font="default" size="100%">Guo, S.</style></author><author><style face="normal" font="default" size="100%">Jiang, M. Q.</style></author><author><style face="normal" font="default" size="100%">X. Li</style></author><author><style face="normal" font="default" size="100%">Shang, D. J.</style></author><author><style face="normal" font="default" size="100%">Tan, Z. F.</style></author><author><style face="normal" font="default" size="100%">Y.S. Wu</style></author><author><style face="normal" font="default" size="100%">ZJ Wu</style></author><author><style face="normal" font="default" size="100%">Zou, Q.</style></author><author><style face="normal" font="default" size="100%">Zheng, Y.</style></author><author><style face="normal" font="default" size="100%">L.M. Zeng</style></author><author><style face="normal" font="default" size="100%">T. Zhu</style></author><author><style face="normal" font="default" size="100%">Hu, M.</style></author><author><style face="normal" font="default" size="100%">Zhang, Y. H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">High N2O5 Concentrations Observed in Urban Beijing: Implications of a Large Nitrate Formation Pathway</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 Tech Let</style></alt-title><short-title><style face="normal" font="default" size="100%">Environ Sci Tech LetEnviron Sci Tech Let</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air-quality</style></keyword><keyword><style  face="normal" font="default" size="100%">boundary-layer</style></keyword><keyword><style  face="normal" font="default" size="100%">chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">China</style></keyword><keyword><style  face="normal" font="default" size="100%">haze</style></keyword><keyword><style  face="normal" font="default" size="100%">model simulation</style></keyword><keyword><style  face="normal" font="default" size="100%">nitryl chloride</style></keyword><keyword><style  face="normal" font="default" size="100%">no3</style></keyword><keyword><style  face="normal" font="default" size="100%">pm2.5</style></keyword><keyword><style  face="normal" font="default" size="100%">rural site</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%">Oct</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">10</style></number><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">416-420</style></pages><isbn><style face="normal" font="default" size="100%">2328-8930</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">The heterogeneous hydrolysis of dinitrogen pentoxide (N2O5) is important to understanding the formation of particulate nitrate (pNO(3)(-)). Measurements of N2O5 in the surface layer taken at an urban site in Beijing are presented here. N2O5 was observed with large day-to-day variability. High N2O5 concentrations were determined during pollution episodes with the co-presence of large aerosol loads. The maximum value was 1.3 ppbv (5 s average), associated with an air mass characterized by a high level of O-3. N2O5 uptake coefficients were estimated to be in the range of 0.025-0.072 using the steady-state lifetime method. As a consequence, the nocturnal pNO(3)(-) formation potential by N2O5 heterogeneous uptake was calculated to be 24-85 mu g m(-3) per night and, on average, 57 mu g m(-3) during days with pollution. This was comparable to or even higher than that formed by the partitioning of HNO3. The results highlight that N2O5 heterogeneous hydrolysis is vital in pNO(3)(-) formation in Beijing.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000412970700005</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;Fj7wpTimes Cited:0Cited References Count:34&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, Peoples R ChinaChinese Acad Sci, CAS Ctr Excellence Reg Atmospher Environm, Xiamen, Peoples R China</style></auth-address></record></records></xml>