AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Chemical Composition of PM2.5 at Sanya: Effects from Regional Transport
JIAMAO ZHOU, Institute of Earth Environment, Chinese Academy of Sciences
Abstract Number: 291 Working Group: Remote and Regional Atmospheric Aerosols
Abstract Intensive observation of PM2.5, organic and elemental carbon (OC and EC), water-soluble ions and elemental were conducted from January 8th to February 8th, 2012 at Sanya, Hannan Province, China. Average PM2.5 mass concentration was 20.4±7.6μg.m-3. The air quality of Sanya was good than most of other Chinese cities and the PM2.5 concentration accorded with the newly national PM2.5 standards. Carbonaceous aerosol, water-soluble ions and continental matter account for 30.44%, 37.08% and 9.14% in PM2.5 respectively.
Gasoline motor vehicle exhaust was identified as the major local source for PM2.5 at Sanya using Principal Component Analysis, followed by biomass burning, diesel exhaust and coal combustion. Two air pollution episodes were observed during the sampling time. The concentration of SO42- and NH4+ were 3 times than normal days, however other composition were twice compared with normal days. HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory) has been used to see the air mass trajectory in these two days which showed the air mass came from northeast where Pearl River Delta located. The result indicated that PM2.5 at Sanya, the most southern city were affected by regional transport