<?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%">ZJ Wu</style></author><author><style face="normal" font="default" size="100%">Ma, N.</style></author><author><style face="normal" font="default" size="100%">Gross, J.</style></author><author><style face="normal" font="default" size="100%">Kecorius, S.</style></author><author><style face="normal" font="default" size="100%">Lu, K. D.</style></author><author><style face="normal" font="default" size="100%">Shang, D. J.</style></author><author><style face="normal" font="default" size="100%">Y. Wang</style></author><author><style face="normal" font="default" size="100%">Y.S. Wu</style></author><author><style face="normal" font="default" size="100%">L.M. Zeng</style></author><author><style face="normal" font="default" size="100%">Hu, M.</style></author><author><style face="normal" font="default" size="100%">Wiedensohler, A.</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%">Thermodynamic properties of nanoparticles during new particle formation events in the atmosphere of North China Plain</style></title><secondary-title><style face="normal" font="default" size="100%">Atmospheric ResearchAtmospheric Research</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Atmos Res</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">activation</style></keyword><keyword><style  face="normal" font="default" size="100%">air pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">air-pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">boreal forest</style></keyword><keyword><style  face="normal" font="default" size="100%">ccn</style></keyword><keyword><style  face="normal" font="default" size="100%">ccn activity</style></keyword><keyword><style  face="normal" font="default" size="100%">cloud condensation nuclei</style></keyword><keyword><style  face="normal" font="default" size="100%">hygroscopic growth</style></keyword><keyword><style  face="normal" font="default" size="100%">new particle formation</style></keyword><keyword><style  face="normal" font="default" size="100%">particle formation and growth</style></keyword><keyword><style  face="normal" font="default" size="100%">particle hygroscopicity</style></keyword><keyword><style  face="normal" font="default" size="100%">particle volatility</style></keyword><keyword><style  face="normal" font="default" size="100%">potential contribution</style></keyword><keyword><style  face="normal" font="default" size="100%">relative-humidity</style></keyword><keyword><style  face="normal" font="default" size="100%">secondary organic aerosol</style></keyword><keyword><style  face="normal" font="default" size="100%">size distribution</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%">May 15</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">188</style></volume><pages><style face="normal" font="default" size="100%">55-63</style></pages><isbn><style face="normal" font="default" size="100%">0169-8095</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">To better understand the sources, formation, and the transport of air pollutants over North China Plain (NCP), a four-week intensive campaign during summertime in 2014 was conducted in a central NCP rural site. In this study, particle hygroscopicity and volatility measurements were focused to characterize the thermodynamic properties of nanoparticles and gain insight into chemical composition of nanoparticles during the new particle formation (NPF) events. The water-soluble fractions of 30 and 50 nm newly formed particles were respectively 0.64 +/- 0.06 and 0.61 +/- 0.06, indicating that the water-soluble chemical compounds, most likely ammonium sulfate, dominated the condensational growth of newly formed particles over the NCP. Due to containing higher water-soluble fraction, nanoparticles can be activated as cloud condensation nuclei (CCN) at lower supersaturation in the atmosphere of NCP in contrast to cleaner environments, such as Melpitz (Central European background) and Hyytiala (boreal forest) during the NPF events. Our observations showed that the NPF and subsequent growth significantly resulted in an enhancement in CCN number concentration. The ranges of enhancement factors of CCN number concentration for supersaturation (SS) = 0.2, 0.4, 0.8% were respectively 1.9-7.0, 2.7-8.4, and 3.6-10.1. After being heated to 300 degrees C, the shrink factors for 30 and 50 nm particles were respectively 0.35 and 038. This indicated that non-volatile compounds could be produced during the growth process of newly formed particles. (C) 2017 Elsevier B.V. All rights reserved.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000395609200007</style></accession-num><notes><style face="normal" font="default" size="100%">Em9cqTimes Cited:0Cited References Count:64</style></notes><auth-address><style face="normal" font="default" size="100%">Peking Univ, Coll Environm Sci &amp; Engn, State Key joint Lab Environm Simulat &amp; pollut, Beijing 100871, Peoples R ChinaLeibniz Inst Tropospher Res, D-04318 Leipzig, Germany</style></auth-address></record></records></xml>