Atmospheric particle formation events in Nanjing during summer 2010

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...

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Bibliographic Details
Published inHuanjing kexue Vol. 33; no. 3; p. 701
Main Authors Wang, Hong-Lei, Zhu, Bin, Shen, Li-Juan, Kang, Han-Qing, Diao, Yi-Wei
Format Journal Article
LanguageChinese
Published China 01.03.2012
Subjects
Aerosols - analysis
Air Pollutants - analysis
Atmosphere - analysis
China
Cities
Environmental Monitoring
Particle Size
Particulate Matter - analysis
Seasons
Sunlight
Wind
China
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Summary: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 x 10(4) 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
ISSN:0250-3301