Abstract
In this study, PM2.5 has been measured in the suburb of Shenzhen. The mean mass concentration of PM2.5 was 101.6±27.5μgm−3 in winter and 32.7±19.7μgm−3 in summer. The high PM2.5 concentration level is probably due to the serious emissions from the Pearl River Delta where Shenzhen is located. The sum contribution of water-soluble ions was an average of 53.1±7.6% in winter and 56.3±15.2% in summer, while the sum contribution of polycyclic aromatic hydrocarbons was an average of 7.5±1.4% in winter and 20.5±7.0% in summer. Obvious seasonal variations of PM2.5 and chemical composition were partly because of the different origins of air mass reaching Shenzhen. SO42−, NH4+ and NO3− were the major water-soluble ions and fluorene and pyrene were the major polycyclic aromatic hydrocarbons in PM2.5. Additionally, six factors including combustion emission factor, fresh sea-salt factor, secondary nitrate factor, airborne dust factor, secondary aerosol factor and aged sea-salt factor were identified by EPA positive matrix factorization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
