<?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%">Hu, M.</style></author><author><style face="normal" font="default" size="100%">ZJ Wu</style></author><author><style face="normal" font="default" size="100%">Slanina, J.</style></author><author><style face="normal" font="default" size="100%">Lin, P.</style></author><author><style face="normal" font="default" size="100%">S. Liu</style></author><author><style face="normal" font="default" size="100%">L.M. Zeng</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Acidic gases, ammonia and water-soluble ions in PM(2.5) at a coastal site in the Pearl River Delta, China</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric Environment</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Atmos. Environ.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">(PRD)</style></keyword><keyword><style  face="normal" font="default" size="100%">acidic gases</style></keyword><keyword><style  face="normal" font="default" size="100%">agricultural site</style></keyword><keyword><style  face="normal" font="default" size="100%">ammonia</style></keyword><keyword><style  face="normal" font="default" size="100%">China</style></keyword><keyword><style  face="normal" font="default" size="100%">dissociation-constant</style></keyword><keyword><style  face="normal" font="default" size="100%">Environmental Sciences &amp; Ecology</style></keyword><keyword><style  face="normal" font="default" size="100%">formation</style></keyword><keyword><style  face="normal" font="default" size="100%">heterogeneous</style></keyword><keyword><style  face="normal" font="default" size="100%">jet aerosol collector</style></keyword><keyword><style  face="normal" font="default" size="100%">matter</style></keyword><keyword><style  face="normal" font="default" size="100%">Meteorology &amp; Atmospheric Sciences</style></keyword><keyword><style  face="normal" font="default" size="100%">nitric-acid</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrous-acid</style></keyword><keyword><style  face="normal" font="default" size="100%">particle</style></keyword><keyword><style  face="normal" font="default" size="100%">particulate</style></keyword><keyword><style  face="normal" font="default" size="100%">pearl river delta</style></keyword><keyword><style  face="normal" font="default" size="100%">PM(2.5)</style></keyword><keyword><style  face="normal" font="default" size="100%">rural site</style></keyword><keyword><style  face="normal" font="default" size="100%">seasonal-variations</style></keyword><keyword><style  face="normal" font="default" size="100%">water-soluble ions</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Aug</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">25</style></number><volume><style face="normal" font="default" size="100%">42</style></volume><pages><style face="normal" font="default" size="100%">6310-6320</style></pages><isbn><style face="normal" font="default" size="100%">1352-2310</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">Real-time measurements of acidic trace gases (HCl, HNO(3), HONO, and SO(2)), ammonia, and water-soluble ions in PM(2.5) were conducted at Xinken, a coastal site downwind of Guangzhou, from 4 October to 4 November 2004, as part of the Pearl River Delta (PRD) intensive field campaign. The average concentrations of HCl, HONO, HNO(3), SO(2), and NH(3) are 2.8, 2.9, 6.3, 55.4, and 7.3 mu g m(-3) respectively, and 2.4, 7.2, 24.1, and 9.2 mu g m(-3) for Cl(-), NO(3)(-), SO(4)(2-), and NH(4)(+) in PM(2.5). The diurnal variations of both HCl and HNO(3) showed higher concentrations during daytime and lower concentrations at night, and aerosol Cl(-) and NO(3)(-) showed an opposite diurnal patterns to HCl and HNO(3). The diurnal variation of NH(3) showed the similar pattern to that of aerosol NH(4)(+) with lower concentration during daytime and higher concentration at night. The average concentration of SO(2) during daytime was higher than that at night. The transportation of urban plumes to the sampling site could explain the higher concentration of SO(2) during daytime. HONO showed a clear diurnal variation with lower concentration during daytime and higher concentration at night. The HONO concentrations were positively correlated with the particle surface area concentrations, suggesting the formation of HONO through the heterogeneous conversion on particle surfaces could be significant. The ionic charge balance analysis included the cations derived from filter measurements indicates that the contribution of the cations in fine particle (PM(1.8)) to the charge balance is not pronounced. The theoretical equilibrium constant (K(e)) of NH(4)NO(3) is higher than the observed concentration product (K(m) = [NH(3)] x [HNO(3)]) during daytime, and lower than K(m) at night. This indicates that the atmospheric conditions during the sampling period did not favor the formation of NH(4)NO(3) during daytime. (c) 2008 Elsevier Ltd. All rights reserved.</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">WOS:000259613900013</style></accession-num><notes><style face="normal" font="default" size="100%">ISI Document Delivery No.: 354BMTimes Cited: 88Cited Reference Count: 44Hu, Min Wu, Zhijun Slanina, J. Lin, Peng Liu, Shang Zeng, LiminZeng, Limin/D-3948-2013; Lin, Peng/G-4867-2016; Liu, Shang/F-9085-2011; Wu, Zhijun/A-7041-2012Lin, Peng/0000-0002-3567-7017; Liu, Shang/0000-0002-3403-8651;12810101Pergamon-elsevier science ltdOxford</style></notes><auth-address><style face="normal" font="default" size="100%">[Hu, Min; Wu, Zhijun; Slanina, J.; Lin, Peng; Liu, Shang; Zeng, Limin] Peking Univ, Coll Environm Sci &amp;amp; Engn, State Key Joint Lab Environm Simulat &amp;amp; Pollut Con, Beijing 100871, Peoples R China.Hu, M (reprint author), Peking Univ, Coll Environm Sci &amp;amp; Engn, State Key Joint Lab Environm Simulat &amp;amp; Pollut Con, Beijing 100871, Peoples R China.minhu@pku.edu.cn</style></auth-address></record></records></xml>