Air Quality Variation in Wuhan, Daegu, and Tokyo during the Explosive Outbreak of COVID-19 and Its Health Effects

International Journal of Environmental Research and Public Health
Chang-Jin Ma, Gong-Unn Kang

Abstract

This study was designed to assess the variation of the air quality actually measured from the air pollution monitoring stations (AQMS) in three cities (Wuhan, Daegu, and Tokyo), in Asian countries experiencing the explosive outbreak of COVID-19, in a short period of time. In addition, we made a new attempt to calculate the reduced DosePM2.5 (μg) at the bronchiolar (Br.) and alveolar-interstitial (AI) regions of the 10-year-old children after the city lockdown/self-reflection of each city. A comparison of the average PM2.5 of a month before and after the lockdown (Wuhan) and self-reflection (Daegu and Tokyo) clearly shows that the PM2.5 concentration was decreased by 29.9, 20.9, and 3.6% in Wuhan, Daegu and Tokyo, respectively. Wuhan, Daegu and Tokyo also recorded 53.2, 19.0, and 10.4% falls of NO2 concentration, respectively. Wuhan, which had the largest decrease of PM2.5 concentration due to COVID-19, also marked the largest reduced DosePM2.510-year-old children (μg) (3660 μg at Br. and 6222 μg at AI), followed by Daegu (445 μg at Br. and 1,287 μg at AI), and Tokyo (18 μg at Br. and 52 μg at AI), over two months after the city lockdown/self-reflection. Our results suggest that the city lockdown/self-reflection had the effect o...Continue Reading

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Citations

Sep 2, 2020·International Journal of Environmental Research and Public Health·Beom-Soon HanJong-Jin Baik
Oct 4, 2020·International Journal of Environmental Research and Public Health·Samuel Domínguez-AmarilloRoberto Alonso González-Lezcano
Oct 29, 2020·Environmental Science and Pollution Research International·Quang Tran VuongSung-Deuk Choi
Nov 7, 2020·Environmental Research·Luis-Alberto Casado-ArandaMaría I Viedma-Del-Jesús
Oct 25, 2020·The Science of the Total Environment·Susanne DunkerJan-Christoph Simon
Oct 17, 2020·The Journal of Allergy and Clinical Immunology. in Practice·Kazuhiro AbeYasuki Kobayashi
Mar 24, 2021·Environmental Research·Khurram ShehzadSalman Wahab
Mar 30, 2021·Environmental Science and Pollution Research International·Khurram ShehzadMahmood Ahmad
Apr 7, 2021·Journal of Travel Medicine·M J Ruzmyn VilcassimKristina M Zierold
Jun 18, 2021·BMC Public Health·Bertha V Vasquez-ApesteguiGustavo F Gonzales
Jul 3, 2021·International Journal of Environmental Research and Public Health·Chenlu TaoBaodong Cheng

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