ABSTRACT
In this study, Hanoi’s atmosphere was investigated with data from studies conducted in 2005, 2016, and 2024 and was surprisingly found with high VOCs, NOx, and CO concentrations. This measurement was predominantly attributed to the high transportation demands of Hanoi citizens, with incomplete combustion of gasoline in traffics’ engines as a significant contributor. Thus, O3 concentration in the atmosphere was measured high overall, especially at noon. Further analysis indicated high O3 and hypothetical PAN concentrations caused respiratory infections to be a common disease existing among children under 15. Besides that, loss in crop yield was also identified to be associated with the presence of PAN and O3. Thus, photocatalysis and other remediation methods were investigated to mitigate the effect of photochemical smog. Still, future studies are needed to enhance these remediation methods.
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