<?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%">Meng, X.</style></author><author><style face="normal" font="default" size="100%">Wu, Z.</style></author><author><style face="normal" font="default" size="100%">Guo, S.</style></author><author><style face="normal" font="default" size="100%">Wang, H</style></author><author><style face="normal" font="default" size="100%">Liu, K.</style></author><author><style face="normal" font="default" size="100%">Zong, T.</style></author><author><style face="normal" font="default" size="100%">Y. Liu</style></author><author><style face="normal" font="default" size="100%">W. Zhang</style></author><author><style face="normal" font="default" size="100%">Z. Zhang</style></author><author><style face="normal" font="default" size="100%">S. Chen</style></author><author><style face="normal" font="default" size="100%">Zeng, L.</style></author><author><style face="normal" font="default" size="100%">Hallquist, M.</style></author><author><style face="normal" font="default" size="100%">Shuai, S.</style></author><author><style face="normal" font="default" size="100%">Hu, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Humidity-Dependent Phase State of Gasoline Vehicle Emission-Related Aerosols</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science and TechnologyEnvironmental Science and TechnologyEnvironmental Science &amp;amp; Technology</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%">aerosol</style></keyword><keyword><style  face="normal" font="default" size="100%">aerosols</style></keyword><keyword><style  face="normal" font="default" size="100%">air pollutant</style></keyword><keyword><style  face="normal" font="default" size="100%">Air Pollutants</style></keyword><keyword><style  face="normal" font="default" size="100%">article</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">Atmospheric humidity</style></keyword><keyword><style  face="normal" font="default" size="100%">Beijing</style></keyword><keyword><style  face="normal" font="default" size="100%">China</style></keyword><keyword><style  face="normal" font="default" size="100%">Direct injection</style></keyword><keyword><style  face="normal" font="default" size="100%">exhaust gas</style></keyword><keyword><style  face="normal" font="default" size="100%">fuel</style></keyword><keyword><style  face="normal" font="default" size="100%">gasoline</style></keyword><keyword><style  face="normal" font="default" size="100%">Gasoline direct injection</style></keyword><keyword><style  face="normal" font="default" size="100%">Gasoline vehicle</style></keyword><keyword><style  face="normal" font="default" size="100%">humidity</style></keyword><keyword><style  face="normal" font="default" size="100%">liquefaction</style></keyword><keyword><style  face="normal" font="default" size="100%">Liquids</style></keyword><keyword><style  face="normal" font="default" size="100%">particulate matter</style></keyword><keyword><style  face="normal" font="default" size="100%">phase transition</style></keyword><keyword><style  face="normal" font="default" size="100%">photochemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">Port fuel injections</style></keyword><keyword><style  face="normal" font="default" size="100%">Primary aerosols</style></keyword><keyword><style  face="normal" font="default" size="100%">Rebound behavior</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary aerosols</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary organic aerosol</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary organic aerosols</style></keyword><keyword><style  face="normal" font="default" size="100%">summer</style></keyword><keyword><style  face="normal" font="default" size="100%">time</style></keyword><keyword><style  face="normal" font="default" size="100%">Traffic-related</style></keyword><keyword><style  face="normal" font="default" size="100%">vehicle emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">Vehicles</style></keyword><keyword><style  face="normal" font="default" size="100%">winter</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year></dates><number><style face="normal" font="default" size="100%">2</style></number><volume><style face="normal" font="default" size="100%">55</style></volume><pages><style face="normal" font="default" size="100%">832-841</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The phase states of primarily emitted and secondarily formed aerosols from gasoline vehicle exhausts were investigated by quantifying the particle rebound fraction (f). The rebound behaviors of gasoline vehicle emission-related aerosols varied with engines, fuel types, and photochemical aging time, showing distinguished differences from biogenic secondary organic aerosols. The nonliquid-to-liquid phase transition of primary aerosols emitted from port fuel injection (PFI) and gasoline direct injection (GDI) vehicles started at a relative humidity (RH) = 50 and 60%, and liquefaction was accomplished at 60 and 70%, respectively. The RH at which f declined to 0.5 decreased from 70 to 65% for the PFI case with 92# fuel, corresponding to the photochemical aging time from 0.37 to 4.62 days. For the GDI case, such RH enhanced from 60 to 65%. Our results can be used to imply the phase state of traffic-related aerosols and further understand their roles in urban atmospheric chemistry. Taking Beijing, China, as an example, traffic-related aerosols were mainly nonliquid during winter with the majority ambient RH below 50%, whereas they were mostly liquid during the morning rush hour of summer, and traffic-related secondary aerosols fluctuated between nonliquid and liquid during the daytime and tended to be liquid at night with increased ambient RH. © 2020 American Chemical Society.</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><notes><style face="normal" font="default" size="100%">Export Date: 7 June 2021</style></notes><remote-database-name><style face="normal" font="default" size="100%">Scopus</style></remote-database-name></record></records></xml>