Articles | Volume 17, issue 16
Atmos. Chem. Phys., 17, 9979–10000, 2017
https://doi.org/10.5194/acp-17-9979-2017
Atmos. Chem. Phys., 17, 9979–10000, 2017
https://doi.org/10.5194/acp-17-9979-2017
Research article
25 Aug 2017
Research article | 25 Aug 2017

Seasonal variations in high time-resolved chemical compositions, sources, and evolution of atmospheric submicron aerosols in the megacity Beijing

Wei Hu et al.

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Short summary
Seasonal changes in chemical compositions, sources, and evolution for submicron aerosols in the megacity Beijing were investigated based on high-resolution AMS measurements. Carbonaceous fraction (OA+BC) constituted over 50 % of PM1 in autumn due to primary emissions, while SNA contributed 60 % to PM1 in other seasons. Secondary components (OOA+SNA) contributed ~ 60–80 % to PM1, suggesting that secondary formation played an important role in PM pollution. OA was in a relatively high oxidation state.
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