%0 Journal Article
%T Atmospheric Particle Formation Events in Nanjing During Summer 2010<br>南京市夏季大气气溶胶新粒子生成事件分析
%A WANG Hong-lei
%A ZHU Bin
%A SHEN Li-juan
%A KANG Han-qing
%A DIAO Yi-wei
%A <br>王红磊
%A 朱彬
%A 沈利娟
%A 康汉青
%A 刁一伟
%J 环境科学
%D 2012
%I 
%X Feature of aerosol particle number concentration, condition and impact factor of new particle formation (NPF) were investigated in Nanjing during summer. In this study, aerosol particle number concentration and gaseous pollutants (O3, SO2 and NO2) measurements were carried out by Wide-Range Particle Spectrometer (WPS) and Differential Optical Absorption Spectroscopy (DOAS) in July 2010. Combining with observations from Automatic Weather Station and Backward Trajectory Simulation, the condition and impact factor of NPF were discussed. Results showed that the averaged 10-500 nm particle number concentration was 1.7×104 cm-3, similar to some typical observation values in North American and Europe; the 10-25 nm particle number concentration accounted for 25% of the total number concentration. Six NPF events occurred during observation. We analyzed that stable wind speed and direction, strong solar radiation promoted the NPF. The humidity during NPF event varied from 50% to 70%. Results indicated that clean ocean air mass brought from easterly and southerly wind promoted the NPF by Backward Trajectory Model Simulation. During the NPF event, the 10-25 nm particle number concentration positively correlated with the concentration of SO2, and negatively correlated with O3, whereas poorly correlated with NO2.
%K new particle formation
%K aerosol
%K number concentration
%K surface area concentration
%K back trajectory
%K pollutant gas
%K Nanjing<br>新粒子生成
%K 大气气溶胶
%K 数浓度
%K 表面积浓度
%K 后向轨迹
%K 污染气体
%K 南京
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=B88BEF75FC523A928D079F1017F526F2&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=38B194292C032A66&sid=80BBC722D530DB8D&eid=2868AE484E7BAD6B&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=49