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Title: Air quality during COVID-19 lockdown: Blessing in disguise
Authors: Ghosh, Shilpi
Ghosh, Shatabdi
Keywords: Air pollutants;Air quality;COVID-19;Lockdown
Issue Date: Aug-2020
Publisher: NISCAIR-CSIR, India
Abstract: The  world  at  present  is  facing  a  gravest  health  crisis  due  to  the  Covid-19  pandemic.  To  control  its  unimaginable transmission worldwide lockdown was implemented resulting in economic deterioration but on the other hand betterment of the environment took place.  Therefore this study attempted to analyze the quality of air during the lockdown period and infer its outcome to environment and health. 15 empirical research articles, eight (54%), three (20%), two (13%) and two (13%) from Asia, Europe, South America and North America, respectively have been evaluated. From the studies it was inferred that during the lockdown period, in general, there was a trend of decrease in the level of concentrations of PM10, PM2.5, CO, NO, NO2, NH3, NOx, SO2 and increase in the concentration level of O3  in comparison to either the pre-lockdown period or to the previous year(s) records. Marked decrease in the levels of NO, NO2, NOx were noted. Also PM10, PM2.5, SO2  and CO levels were seen to diminish significantly. The main reasons for such decrease were restricted movements of traffic  and  temporary  closure  of  factories  and  industries.  However,  as  the  thermal  power  plants  were  functional  during lockdown  so  improvement  of  air  quality  in  those  areas  was  not  significant.  Overall,  significant  improvement  in  the  air quality  was  observed  during  the  lockdown  which  led  to  better  climatic  conditions,  lesser  pollution  and  improved  many seasonal ailments like asthma and other cardio-respiratory issues in people.
Page(s): 420-430
ISSN: 0975-0959 (Online); 0301-1208 (Print)
Appears in Collections:IJBB Vol.57(4) [August 2020]

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