Aerosol size distributions in urban Jinan: Seasonal characteristics and variations between weekdays and weekends in a heavily polluted atmosphere

作者：Xu, Pengju; Wang, Wenxing^*; Yang, Lingxiao; Zhang, Qingzhu; Gao, Rui; Wang, Xinfeng; Nie, Wei; Gao, Xiaomei

来源：Environmental Monitoring and Assessment, 2011, 179(1-4): 443-456.

DOI：10.1007/s10661-010-1747-2

• Aerosol
• Particle number concentration
• Seasonal variation
• Diurnal variation
• Weekday
• Weekend

Aerosol size distributions, trace gas, and PM(2.5) concentrations have been measured in urban Jinan, China, over 6 months in 2007 and 2008, covering spring, summer, fall, and winter time periods. Number concentrations of particles (10-2,500 nm) were 16,200, 13,900, 11,200, and 21,600 cm (-aEuro parts per thousand 3) in spring, summer, fall, and winter, respectively. Compared with other urban studies, Jinan has higher number concentrations of accumulation-mode particles (100-500 nm) and particles (10-2,500 nm), but lower concentrations of ultrafine particles (10-100 nm). The number, surface and volume concentrations, and size distributions of particles showed obvious seasonal variation and are also influenced by traffic emissions. Through correlation analysis, traffic emissions are proposed to be a more important contributor to Atkien-mode and accumulation-mode particles than coal firing. Around midday, the presence of nanoparticles and new particle formation is limited to pre-existing particles from traffic emissions and the mass transport of particles from suburban and rural areas. Compared with other studies in urban areas of Europe and the USA, the variation of particle number concentration and related gas concentration in Jinan between weekdays and weekends is smaller and the reasons has been deduced.

• 出版日期2011-8
• 单位山东大学