Air Pollution Trend and Variation during a Mega Festival of Firecrackers (Diwali) in Context to COVID-19 Pandemic
Open Access
- 30 September 2022
- journal article
- research article
- Published by Springer Science and Business Media LLC in Asian Journal of Atmospheric Environment
- Vol. 16 (3), 34-53
- https://doi.org/10.5572/ajae.2022.016
Abstract
The present study was conducted in Lucknow city to assess the impact of firecracker burning during Diwali, from 2 November 2021-6 November 2021 including the pre and post-Diwali days. The concentrations of PM10, PM2.5, SO2, NO2, CO, O3, ben-zene and toluene, were monitored from the Central Pollution Control Board site on an hourly basis. The Air Quality Index was also recorded for PM10, PM2.5, SO2 and NO2. A questionnaire survey was done with 51 doctors to know the reported complaints post-Diwali. On Diwali night the PM2.5 value reached 262 lig m-3 around 22:00 hours and the maximum value (900 lig m-3) was obtained on 5 November, reported from the Central School monitoring station. From Gomti Nagar highest PM2.5 value obtained on Diwali day was 538 lig m-3 at 23:00 hours reaching 519 lig m-3 post-Diwali. Areas belonging to the old part of the city witnessed higher variations as PM2.5 crossed 900 lig m-3, in Lal-bagh and Talkatora areas. The multivariate analysis showed that on Diwali night there was an increase of 204, 386, 344 and 341 in the PM2.5 concentration reported from Gom-tinagar, Central School, Talkatora and Lalbagh stations, showing that firecracker burning resulted in a significant increase in air pollution. The Toluene/Benzene ratio was mostly more than 1 indicating that toluene and benzene may be emitted from other sources as well including the mobile sources. Around 50-75% rise was seen in the number of patients post-Diwali. 57.1% of the reported cases had respiratory issues, followed by allergic reactions. The data obtained from Lalbagh, Talkatora and Central School showed that although the values remained high, a decreasing trend was seen in the AQI com-pared to previous years which is a good sign and may be attributed to public awareness and the ongoing pandemic making people conscious.Keywords
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