Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days
Research Center for Eco-Environmental Sciences · Chinese Academy of Sciences · +4 more institutions
Abstract
Haze in China has been increasing in frequency of occurrence as well as the area of the affected region. Here, we report on a new mechanism of haze formation, in which coexistence with NOx can reduce the environmental capacity for SO2, leading to rapid conversion of SO2 to sulfate because NO2 and SO2 have a synergistic effect when they react on the surface of mineral dust. Monitoring data from five severe haze episodes in January of 2013 in the Beijing-Tianjin-Hebei regions agreed very well with the laboratory simulation. The combined air pollution of motor vehicle exhaust and coal-fired flue gases greatly reduced the atmospheric environmental capacity for SO2, and the formation of sulfate was found to be a…
Citation impact
- FWCI
- 34.49
- Percentile
- 100%
- References
- 32
Authors
10- HHHong HeCorresponding
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences
- YWYuesi Wang
Institute of Atmospheric Physics, Chinese Academy of Sciences
- QMQingxin Ma
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences
- JMJinzhu Ma
Chinese Academy of Sciences, Research Center for Eco-Environmental Sciences
- BCBiwu Chu
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences
Topics & keywords
- Haze
- NOx
- Environmental science
- Sulfate
- Beijing
- Air pollution
- Pollution
- Flue gas