TY - JOUR
T1 - Changes in air quality related to the control of coronavirus in China
T2 - Implications for traffic and industrial emissions
AU - Wang, Yichen
AU - Yuan, Yuan
AU - Wang, Qiyuan
AU - Liu, Chen Guang
AU - Zhi, Qiang
AU - Cao, Junji
N1 - Publisher Copyright:
© 2020
PY - 2020/8/20
Y1 - 2020/8/20
N2 - Measures taken to control the disease (Covid-19) caused by the novel coronavirus dramatically reduced the number of vehicles on the road and diminished factory production. For this study, changes in the air quality index (AQI) and the concentrations of six air pollutants (PM2.5, PM10, CO, SO2, NO2, and O3) were evaluated during the Covid-19 control period in northern China. Overall, the air quality improved, most likely due to reduced emissions from the transportation and secondary industrial sectors. Specifically, the transportation sector was linked to the NO2 emission reductions, while lower emissions from secondary industries were the major cause for the reductions of PM2.5 and CO. The reduction in SO2 concentrations was only linked to the industrial sector. However, the reductions in emissions did not fully eliminate air pollution, and O3 actually increased, possibly because lower fine particle loadings led to less scavenging of HO2 and as a result greater O3 production. These results also highlight need to control emissions from the residential sector.
AB - Measures taken to control the disease (Covid-19) caused by the novel coronavirus dramatically reduced the number of vehicles on the road and diminished factory production. For this study, changes in the air quality index (AQI) and the concentrations of six air pollutants (PM2.5, PM10, CO, SO2, NO2, and O3) were evaluated during the Covid-19 control period in northern China. Overall, the air quality improved, most likely due to reduced emissions from the transportation and secondary industrial sectors. Specifically, the transportation sector was linked to the NO2 emission reductions, while lower emissions from secondary industries were the major cause for the reductions of PM2.5 and CO. The reduction in SO2 concentrations was only linked to the industrial sector. However, the reductions in emissions did not fully eliminate air pollution, and O3 actually increased, possibly because lower fine particle loadings led to less scavenging of HO2 and as a result greater O3 production. These results also highlight need to control emissions from the residential sector.
KW - AQI
KW - Air pollutants
KW - Covid-19
KW - Industrial emissions
KW - Traffic emissions
UR - http://www.scopus.com/inward/record.url?scp=85085961719&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2020.139133
DO - 10.1016/j.scitotenv.2020.139133
M3 - 文章
C2 - 32402905
AN - SCOPUS:85085961719
SN - 0048-9697
VL - 731
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 139133
ER -