<?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%">Le Breton, M.</style></author><author><style face="normal" font="default" size="100%">Hallquist, A. M.</style></author><author><style face="normal" font="default" size="100%">Pathak, R. K.</style></author><author><style face="normal" font="default" size="100%">Simpson, D.</style></author><author><style face="normal" font="default" size="100%">Wang, Y. J.</style></author><author><style face="normal" font="default" size="100%">Johansson, J.</style></author><author><style face="normal" font="default" size="100%">Zheng, J.</style></author><author><style face="normal" font="default" size="100%">Yang, Y. D.</style></author><author><style face="normal" font="default" size="100%">Shang, D. J.</style></author><author><style face="normal" font="default" size="100%">Wang, H. C.</style></author><author><style face="normal" font="default" size="100%">Liu, Q. Y.</style></author><author><style face="normal" font="default" size="100%">Chan, C.</style></author><author><style face="normal" font="default" size="100%">T. Wang</style></author><author><style face="normal" font="default" size="100%">Bannan, T. J.</style></author><author><style face="normal" font="default" size="100%">Priestley, M.</style></author><author><style face="normal" font="default" size="100%">Percival, C. J.</style></author><author><style face="normal" font="default" size="100%">Shallcross, D. E.</style></author><author><style face="normal" font="default" size="100%">Lu, K. D.</style></author><author><style face="normal" font="default" size="100%">Guo, S.</style></author><author><style face="normal" font="default" size="100%">Hu, M.</style></author><author><style face="normal" font="default" size="100%">Hallquist, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Chlorine oxidation of VOCs at a semi-rural site in Beijing: significant chlorine liberation from ClNO2 and subsequent gas- and particle-phase Cl-VOC production</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric 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%">atom chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">boundary-layer</style></keyword><keyword><style  face="normal" font="default" size="100%">high-resolution</style></keyword><keyword><style  face="normal" font="default" size="100%">initiated oxidation</style></keyword><keyword><style  face="normal" font="default" size="100%">mass-spectrometer</style></keyword><keyword><style  face="normal" font="default" size="100%">n2o5 uptake coefficients</style></keyword><keyword><style  face="normal" font="default" size="100%">nitryl chloride</style></keyword><keyword><style  face="normal" font="default" size="100%">northern china</style></keyword><keyword><style  face="normal" font="default" size="100%">ozone production</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary organic aerosol</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Sep 11</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">17</style></number><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">13013-13030</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%">Nitryl chloride (ClNO2) accumulation at night acts as a significant reservoir for active chlorine and impacts the following day's photochemistry when the chlorine atom is liberated at sunrise. Here, we report simultaneous measurements of N2O5 and a suite of inorganic halogens including ClNO2 and reactions of chloride with volatile organic compounds (Cl-VOCs) in the gas and particle phases utilising the Filter Inlet for Gas and AEROsols time-of-flight chemical ionisation mass spectrometer (FIGAERO-ToF-CIMS) during an intensive measurement campaign 40 km northwest of Beijing in May and June 2016. A maximum mixing ratio of 2900 ppt of ClNO2 was observed with a mean campaign nighttime mixing ratio of 487 ppt, appearing to have an anthropogenic source supported by correlation with SO2, CO and benzene, which often persisted at high levels after sunrise until midday. This was attributed to such high mixing ratios persisting after numerous e-folding times of the photolytic lifetime enabling the chlorine atom production to reach 2.3 x 10(5) molecules cm(-3) from ClNO2 alone, peaking at 09:30 LT and up to 8.4 x 10(5) molecules cm(-3) when including the supporting inorganic halogen measurements.Cl-VOCs were observed in the particle and gas phases for the first time at high time resolution and illustrate how the iodide ToF-CIMS can detect unique markers of chlorine atom chemistry in ambient air from both biogenic and anthropogenic sources. Their presence and abundance can be explained via time series of their measured and steady-state calculated precursors, enabling the assessment of competing OH and chlorine atom oxidation via measurements of products from both of these mechanisms and their relative contribution to secondary organic aerosol (SOA) formation.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000444327500001</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;Gt2mjTimes Cited:1Cited References Count:68&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">Univ Gothenburg, Dept Chem &amp;amp; Mol Biol, Gothenburg, SwedenIVL Swedish Environm Res Inst, Gothenburg, SwedenChalmers Univ Technol, Earth &amp;amp; Space Sci, Gothenburg, SwedenNorwegian Meteorol Inst, Oslo, NorwayPeking Univ, Coll Environm Sci &amp;amp; Engn, State Key Joint Lab Environm Simulat &amp;amp; Pollut Con, Beijing, Peoples R ChinaHong Kong Univ Sci &amp;amp; Technol, Div Environm &amp;amp; Sustainabil, Kowloon, Hong Kong, Peoples R ChinaCity Univ Hong Kong, Sch Energy &amp;amp; Environm, Hong Kong, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Civil &amp;amp; Environm Engn, Hong Kong, Hong Kong, Peoples R ChinaUniv Manchester, Ctr Atmospher Sci, Sch Earth Atmospher &amp;amp; Environm Sci, Manchester, Lancs, EnglandUniv Bristol, Sch Chem, Bristol, Avon, EnglandUniv Western Cape, Dept Chem, Cape Town, South AfricaCALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA USA</style></auth-address></record></records></xml>