Sasan Faridi1,2#, Fatemeh Yousefian1,2#, Sadegh Niazi3, Mohammad Rezvani Ghalhari2, Mohammad Sadegh Hassanvand This email address is being protected from spambots. You need JavaScript enabled to view it.1,2, Kazem Naddafi This email address is being protected from spambots. You need JavaScript enabled to view it.1,2

1 Centre for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
2 Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
3 International Laboratory for Air Quality and Health, School of Earth and Atmospheric Sciences, Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, Queensland, Australia

# These authors contributed equally to this work.


 

Received: May 14, 2020
Revised: June 5, 2020
Accepted: June 14, 2020

 Copyright The Author's institutions. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited. 


Download Citation: ||https://doi.org/10.4209/aaqr.2020.05.0225 

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Cite this article:

Faridi, S., Yousefian, F., Niazi, S., Ghalhari, M.R., Hassanvand, M.S. and Naddafi. K. (2020). Impact of SARS-CoV-2 on ambient air particulate matter in Tehran. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2020.05.0225


HIGHLIGHTS

  • This study reveals the effect of SARS-CoV-2 on ambient PM10 and PM2.5 in Tehran.
  • Contrary to expectations, ambient PM noticeably increased during the SARS-CoV-2.
  • An increase of 20.5% was found for PM2.5 during first month of SARS-CoV-2 outbreak.
  • An increase of 15.7% was found for PM10 during first month of SARS-CoV-2 outbreak.
 

ABSTRACT


As an international novel challenge, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has the positive and negative indirect effects on the environmental issues, particularly ambient air pollution. Our study aims to determine the effects of SARS-CoV-2 pandemic on the ambient air PM10 and PM2.5 in Tehran city, by comparison of the air quality data recorded at twenty-two air quality monitoring stations during the outbreak period from 20/02/2020 to 02/04/2020 and the same period of last year (20/02/2019-03/04/2019). Contrary to expectations, the average concentrations of ambient PM2.5 and PM10 in Tehran markedly increased during the SARS-CoV-2 outbreak compared to the same period of last year. An increase of 20.5% and 15.7% was found for ambient PM2.5 and PM10 in Tehran during the first scenario (the first month of SARS-CoV-2 outbreak in Iran) between 20/02/2020 and 19/03/2020, whereas these figures experienced an increase equal to 23.5% and 20.0% during the second scenario (over the Nowruz New Year holidays), respectively. Overall, the average concentrations of ambient PM2.5 and PM10 has risen by nearly 20.5% and 16.5% during the outbreak compared to the same period of last year. The non-integrated decisions (non-closing down administrative centers) or recommendations in particular on decreasing the use of public transportation to prevent close contact have worsened the ambient air particulate matter status in Tehran over the SARS-CoV-2 outbreak, because Tehran citizens inevitably used the private cars. As a result, SARS-CoV-2 outbreak provided an exceptional opportunity to evaluate the direct/indirect influence of recommendations/decisions on emission sources and air quality policies on ambient air PM2.5 and PM10 in Tehran. Because of the significant association between high level of lethality by COVID-19 infection and ambient air pollution exposures, the rise of ambient air PM2.5 in Tehran during this outbreak could increase the lethality rate of SARS-CoV-2.


Keywords: SARS-CoV-2; COVID-19; Ambient air quality, PM2.5; PM10; Tehran.



Aerosol Air Qual. Res. 20:-. https://doi.org/10.4209/aaqr.2020.05.0225 


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