AIRPET, an Asian regional air pollution research network, which is coordinated by the Asian Institute of Technology, involves six cities: Bandung, Bangkok, Beijing, Chennai, Manila, and Hanoi. One of the objectives of the network is to provide a comprehensive assessment of particulate matter (PM) air quality though monitoring and receptor modeling tools jointly by six research teams in these cities. The results within the scope of this monitoring and modeling objective in phase 1 (2001-2003) were presented. In total, the network collected over 2500 PM_2.5 and PM₁₀ samples from characteristic urban sites. In all these cities the levels of PM₁₀ and PM_2.5 were found high especially during the dry season which the frequently exceeded the EPA standard for PM₁₀ and PM_2.5, especially at the traffic sites. Traffic had the highest PM_2.5 contribution in most cities with the exceptional high share (> 70%) in Manila. Traffic and coal combustion had high contribution in Beijing while NaNO₃ was found high in Hanoi. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).

Oanh N.T.K., Upadhyay N., Zhuang Y.-H., Hao Z., Murthy D.V.S., Swaminanthan T., Puji L., Villarin J.T., Khervin C., Co H.X., Trung D.N., Lindgren E.S.

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