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SARS-CoV-2 pandemic lockdown: Effects on air quality in the industrialized Gujarat state of India.
Sci Total Environ. 2020 Oct 01; 737:140391.ST

Abstract

Two weeks after the world health organization described the novel coronavirus (SARS-CoV-2) outbreak as pandemic, the Indian government implemented lockdown of industrial activities and traffic flows across the entire nation between March 24 and May 31, 2020. In this paper, we estimated the improvements achieved in air quality during the lockdown period (March 24, 2020 and April 20, 2020) compared to the pre-lockdown (January 1, 2020 and March 23, 2020) by analyzing PM2.5, PM10, SO2, CO, NO2 and O3 data from nine different air quality monitoring stations distributed across four different zones of the industrialized Gujarat state of western Indian. The Central Pollution Control Board (CPCB)-Air Quality Index (AQI) illustrated better air qualities during the lockdown with higher improvements in the zones 2 (Ahmedabad and Gandhinagar) and 3 (Jamnagar and Rajkot), and moderate improvements in the zones 1 (Surat, Ankleshwar and Vadodra) and 4 (Bhuj and Palanpur). The concentrations of PM2.5, PM10, and NO2 were reduced by 38-78%, 32-80% and 30-84%, respectively. Functioning of the power plants possibly led to less reduction in CO (3-55%) and the declined emission of NO helped to improve O3 (16-48%) contents. We observed an overall improvement of 58% in AQI for the first four months of 2020 compared to the same interval of previous year. This positive outcome resulted from the lockdown restrictions might help to modify the existing environmental policies of the region.

Authors+Show Affiliations

Department of Geology, V.O. Chidambaram College, Tuticorin, Tamil Nadu, India. Electronic address: geoselvam10@gmail.com.Department of Geology, V.O. Chidambaram College, Tuticorin, Tamil Nadu, India; Registration No: 19212232221045, Affiliated to Manonmaniam Sundranar University, Tirunelveli, Tamil Nadu, India.Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.Instituto de Geología, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Ciudad de México, CP 04510, Mexico.Institute for Ocean Management, Anna University, Chennai, Tamil Nadu, India.Department of Geology, V.O. Chidambaram College, Tuticorin, Tamil Nadu, India.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32783875

Citation

Selvam, S, et al. "SARS-CoV-2 Pandemic Lockdown: Effects On Air Quality in the Industrialized Gujarat State of India." The Science of the Total Environment, vol. 737, 2020, p. 140391.
Selvam S, Muthukumar P, Venkatramanan S, et al. SARS-CoV-2 pandemic lockdown: Effects on air quality in the industrialized Gujarat state of India. Sci Total Environ. 2020;737:140391.
Selvam, S., Muthukumar, P., Venkatramanan, S., Roy, P. D., Manikanda Bharath, K., & Jesuraja, K. (2020). SARS-CoV-2 pandemic lockdown: Effects on air quality in the industrialized Gujarat state of India. The Science of the Total Environment, 737, 140391. https://doi.org/10.1016/j.scitotenv.2020.140391
Selvam S, et al. SARS-CoV-2 Pandemic Lockdown: Effects On Air Quality in the Industrialized Gujarat State of India. Sci Total Environ. 2020 Oct 1;737:140391. PubMed PMID: 32783875.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - SARS-CoV-2 pandemic lockdown: Effects on air quality in the industrialized Gujarat state of India. AU - Selvam,S, AU - Muthukumar,P, AU - Venkatramanan,S, AU - Roy,P D, AU - Manikanda Bharath,K, AU - Jesuraja,K, Y1 - 2020/06/20/ PY - 2020/05/14/received PY - 2020/06/15/revised PY - 2020/06/19/accepted PY - 2020/8/14/entrez PY - 2020/8/14/pubmed PY - 2020/8/15/medline KW - Air pollution KW - CPCB-AQI KW - Gujarat KW - India KW - NO(2) KW - SARS-CoV-2 SP - 140391 EP - 140391 JF - The Science of the total environment JO - Sci Total Environ VL - 737 N2 - Two weeks after the world health organization described the novel coronavirus (SARS-CoV-2) outbreak as pandemic, the Indian government implemented lockdown of industrial activities and traffic flows across the entire nation between March 24 and May 31, 2020. In this paper, we estimated the improvements achieved in air quality during the lockdown period (March 24, 2020 and April 20, 2020) compared to the pre-lockdown (January 1, 2020 and March 23, 2020) by analyzing PM2.5, PM10, SO2, CO, NO2 and O3 data from nine different air quality monitoring stations distributed across four different zones of the industrialized Gujarat state of western Indian. The Central Pollution Control Board (CPCB)-Air Quality Index (AQI) illustrated better air qualities during the lockdown with higher improvements in the zones 2 (Ahmedabad and Gandhinagar) and 3 (Jamnagar and Rajkot), and moderate improvements in the zones 1 (Surat, Ankleshwar and Vadodra) and 4 (Bhuj and Palanpur). The concentrations of PM2.5, PM10, and NO2 were reduced by 38-78%, 32-80% and 30-84%, respectively. Functioning of the power plants possibly led to less reduction in CO (3-55%) and the declined emission of NO helped to improve O3 (16-48%) contents. We observed an overall improvement of 58% in AQI for the first four months of 2020 compared to the same interval of previous year. This positive outcome resulted from the lockdown restrictions might help to modify the existing environmental policies of the region. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/32783875/SARS_CoV_2_pandemic_lockdown:_Effects_on_air_quality_in_the_industrialized_Gujarat_state_of_India_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(20)33913-9 DB - PRIME DP - Unbound Medicine ER -