The effects of COVID-19 pandemic on the air pollutants concentration during the lockdown in Tehran, Iran
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In this study, 24-h average concentration of major pollutants, including PM2.5, PM10, NO2, SO2, O3 and CO in the period 1 January to 30 July 2016 to 2020 were investigated to show how partial lockdown affects the behavior of pollutants' concentrations in an ur... ...
