AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Apportionment of Urban Aerosol Sources in Chongqing (China) using Synergistic On-line Techniques
YANG CHEN, Chinese Academy of Sciences
Abstract Number: 332 Working Group: Source Apportionment
Abstract The sources of ambient fine particulate matter (PM2.5) during wintertime at an urban background location in Chongqing (southwestern China) have been determined. Aerosol chemical composition was measured using multiple on-line techniques, such as a single particle aerosol mass spectrometer (SPAMS), on-line elemental carbon-organic carbon analyzer (on-line OC-EC), and In-situ Gas and Aerosol Compositions monitor (IGAC) for water-soluble ions in PM2.5. All the datasets from these techniques have been adjusted to a 1-h time resolution for receptor model input. Positive matrix factorization (PMF) has been used for resolving aerosol sources. The synergistic on-line techniques were helpful for clearer identifying aerosol sources than when only employing the results from the individual methods. These results are useful for better understanding of aerosol sources and atmospheric processes in the urban area of southwestern China.