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Assessment of air quality index and pollutants in Chennai city, India: Pre-Covid and during- Covid period
Proceedings of the International Academy of Ecology and Environmental Sciences ; 12(4):269-280, 2022.
Article in English | ProQuest Central | ID: covidwho-2169635
ABSTRACT
The lockdown was implemented by the government of India during the pandemic period due to Covid-19. This paper presents the effect of lockdown on the air quality index and various pollutants in five major locations in the Chennai city of Tamil Nadu. The air pollutants such as PM10, PM2.5, SO2 and NO2 from the monitoring stations were analyzed from 2018 to 2019 (pre-Covid period) and from 2020 to 2021 (during-Covid period). The results demonstrated that the concentration of PM10 and PM2.5 reduced about 48% and 39% respectively. Similarly, significant reduction in the pollutants SO2 (-25%) and NO2 (-10%) has been observed. In the same way, AQI level before and during lockdown in Chennai city was observed satisfactory to moderate categories. The maximum reduction in AQI was observed in Adyar (-50.38%), followed by Nungambakkam (-44.18%), TNagar (-40.31%), Anna Nagar (-39.98%) and Kilpauk (-30.74%). Overall study implies that regulatory measures in a certain location in a suitable time period control the pollution and protects the environment.
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Collection: Databases of international organizations Database: ProQuest Central Language: English Journal: Proceedings of the International Academy of Ecology and Environmental Sciences Year: 2022 Document Type: Article

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Collection: Databases of international organizations Database: ProQuest Central Language: English Journal: Proceedings of the International Academy of Ecology and Environmental Sciences Year: 2022 Document Type: Article