Source Apportionment, Composition and Oxidative Potential of Particulate Matter in India, China and Europe

ANDRÉ S. H. PRÉVÔT, Deepika Bhattu, Gaëlle Uzu, Yufang Hao, Peeyush Khare, Tianqu Cui, Lu Qi, Qiyuan Wang, Neeraj Rastogi, Junji Cao, Sachchida N. Tripathi, Jean-Luc Jaffrezo, Jay G. Slowik, Imad El Haddad, Kaspar R. Daellenbach, Himadri Bhowmik, Manousakas Manousos, Paul Scherrer Institute

     Abstract Number: 468
     Working Group: Source Apportionment

Abstract
The concentrations of particulate matter vary by an order of magnitude comparing the concentrations in Europe versus the ones in India and China. Also the oxidation potential of particles vary a lot between these areas. One question is if the oxidative potential (OP) as a proxy for toxicity is proportional to the mass concentration. As will be shown there is a considerable variation of oxidation potential per mass which is linked to the composition of the particles and the sources.

For Europe, we could show that secondary organic, especially anthropogenic, aerosol is a driving factor of OP in most areas of Europe with exceptions in Scandinavia where biogenic SOA is a dominant contributor and in cities vehicular wear are dominating (Daellenbach et al., 2020).

We will compare composition, sources of PM as well as the sources of oxidative potential in Europe versus different cities in China and India. Based on these results we will suggest mitigation measures in the different areas based on PM sources, but also based on OP sources.

Daellenbach, K. R., et al. (2020) Sources of particulate-matter air pollution and its oxidative potential in Europe, Nature, 587(7834), https://doi.org/10.1038/s41586-020-2902-8.