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VOL. 3, ISSUE 3 (2021)
Effect of Covid-19 on air quality in Visakhapatnam-A comparative study
Authors
L Kala Grace, Tebesi Peter Raliengoane
Abstract
Data on air pollutants NO2, SO2, NH3, PM2.5, and PM10 collected from January 2018-December 2020 for nine monitoring stations in Visakhapatnam, Andhra Pradesh were assessed for the air pollution status during the COVID-19 lockdown period in comparison to the air pollution status before COVID-19. The study indicated that these air pollutants did not show any strong sign of air pollution. NO2and SO2 levels fall within the range of 0-40 µg/m3, NH3 levels within the range of 0-200 µg/m3, the minimum PM2.5 levels within the range of 0-30 µg/m3 in 2019 and 2020 and the minimum PM10 levels within the range of 0-50 µg/m3 in 2019 and 2020 indicating the air pollution status as Good according AQI. But, the maximum PM2.5 levels fall within the range of 61-90 µg/m3 and the maximum PM10 within the range of 101-250 µg/m3 in 2019 and 2020 indicating the air pollution status as Moderately Polluted according to AQI. Among these three parameters, NH3 recorded the highest values followed by SO2 and NO2 in all three years of the study.
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Pages:102-105
How to cite this article:
L Kala Grace, Tebesi Peter Raliengoane "Effect of Covid-19 on air quality in Visakhapatnam-A comparative study ". International Journal of Ecology and Environmental Sciences, Vol 3, Issue 3, 2021, Pages 102-105
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