Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 731, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.139133
Keywords
Covid-19; AQI; Air pollutants; Traffic emissions; Industrial emissions
Categories
Funding
- National Natural Science Foundation of China [71804115]
- Open Fund of the State Key Laboratory of Loess and Quaternary Geology [SKLLQG1834]
- Key Research and Development Program of Shaanxi Province [2018-ZDXM301]
- Shaanxi Province Key Research and Development Plan Key Industrial Chain (group) Project [2018ZDCXL-SF-02-05]
Ask authors/readers for more resources
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 O-3) 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 O-3 actually increased, possibly because lower fine particle loadings led to less scavenging of HO2 and as a result greater O-3 production. These results also highlight need to control emissions from the residential sector. (C) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available