Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气污染控制中心

	Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days
	He, Hong ; Wang, Yuesi ; Ma, Qingxin ; Ma, Jinzhu ; Chu, Biwu ; Ji, Dongsheng ; Tang, Guiqian ; Liu, Chang ; Zhang, Hongxing ; Hao, Jiming
刊名	SCIENTIFIC REPORTS
	2014
卷号	4 期号:1 页码:-
ISSN号	2045-2322
中文摘要	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 main reason for the growth of fine particles, which led to the occurrence of haze. These results indicate that the impact of motor vehicle exhaust on the atmospheric environment might be underestimated.
WOS记录号	WOS:000331886900002
公开日期	2015-03-24
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9282]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	He, Hong,Wang, Yuesi,Ma, Qingxin,et al. Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days[J]. SCIENTIFIC REPORTS,2014,4(1):-.
APA	He, Hong.,Wang, Yuesi.,Ma, Qingxin.,Ma, Jinzhu.,Chu, Biwu.,...&Hao, Jiming.(2014).Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days.SCIENTIFIC REPORTS,4(1),-.
MLA	He, Hong,et al."Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days".SCIENTIFIC REPORTS 4.1(2014):-.