Topic:

     Ten-year trend of PM_2.5 major components and source tracers from 2008 to 2017 in an urban site of Hong Kong

     香港一城市點細顆粒物化學組分十年變化: 2008-2017

Speaker: 

     Prof. Jian Zhen Yu

     Department of Chemistry

     Division of Environment and Sustainability

     HKUST

[Graphical abstract (click to view the video)]

Time series of PM_2.5 chemical composition from 2008 to 2017 in the form of (a) monthly averages, (b) annual average, (c) winter seasonal averages, and
(d) summer seasonal averages. In the legends, “Salts” includes Na⁺ and Cl^-; “Crustal” represents crustal materials, computed to be
1.89*Al+2.14*Si+1.4*Ca+1.43*Fe; and “Tracers” includes elements other than Na, Cl, S, K, Al, Si, Ca, Fe. OM refers to organic matter and computed to be 1.4*OC.