The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: the possible contribution of traffic-related emissions

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

	The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: the possible contribution of traffic-related emissions
	Liu, Yongchun; Zhang, Yusheng; Lian, Chaofan; Yan, Chao; Feng, Zeming; Zheng, Feixue; Fan, Xiaolong; Chen, Yan; Wang, Weigang; Chu, Biwu
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2020-11-07
卷号	20 期号:21 页码:13023-13040
ISSN号	1680-7316
英文摘要	Secondary aerosols are a major component of PM2.5, yet their formation mechanisms in the ambient atmosphere are still unclear. Based on field measurements in downtown Beijing, we show that the photolysis of nitrous acid (HONO) may promote the formation of organic and nitrate aerosols in winter in Beijing, which is supported by the fact that the mass concentrations of organic and nitrate aerosols linearly increase as a function of HONO consumed from early morning to noon. The increased nitrate content also leads to the formation of ammonium particulate matter through enhancing the neutralization of nitrate and sulfate by ammonia. We further illustrate that during pollution events in winter in Beijing, over 50% of the ambient HONO may be related to traffic-related emissions, including direct emissions and formation via the reaction between OH and vehicle-emitted NO. Overall, our results indicate that trafficrelated HONO may play an important role in the oxidative capacity and in turn contribute to haze formation in winter in Beijing. The mitigation of HONO and NOx emissions from vehicles may be an effective way to reduce the formation of secondary aerosols and severe haze events in winter in Beijing.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45105]
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	Liu, Yongchun,Zhang, Yusheng,Lian, Chaofan,et al. The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: the possible contribution of traffic-related emissions[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(21):13023-13040.
APA	Liu, Yongchun.,Zhang, Yusheng.,Lian, Chaofan.,Yan, Chao.,Feng, Zeming.,...&Kulmala, Markku.(2020).The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: the possible contribution of traffic-related emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(21),13023-13040.
MLA	Liu, Yongchun,et al."The promotion effect of nitrous acid on aerosol formation in wintertime in Beijing: the possible contribution of traffic-related emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.21(2020):13023-13040.