Comparative observation of atmospheric nitrous acid (HONO) in Xi'an and Xianyang located in the GuanZhong basin of western China

doi:10.1016/j.envpol.2021.117679

	Comparative observation of atmospheric nitrous acid (HONO) in Xi'an and Xianyang located in the GuanZhong basin of western China
	Li, Weiran 1; Tong, Shengrui 1; Cao, Junji 2; Su, Hang 4; Zhang, Wenqian 1; Wang, Lili 5; Jia, Chenhui 1; Zhang, Xinran 1,6; Wang, Zhen 1,6; Chen, Meifang 1,7
刊名	ENVIRONMENTAL POLLUTION
	2021-11-15
卷号	289 页码:9
关键词	HONO Comparison Nocturnal HONO formation Daytime HONO budget
ISSN号	0269-7491
DOI	10.1016/j.envpol.2021.117679
通讯作者	Tong, Shengrui(tongsr@iccas.ac.cn)
英文摘要	HONO is an important component of reactive nitrogen (N-r) and precursors of OH radical. However, the source and removal of HONO are not clear. Here, measurements of HONO (May 18-31, 2018) were conducted in Xi'an and Xianyang simultaneously for the first time. The relationship between HONO and other N-r (such as NO and NO2) in two cities was analyzed. The mixing ratio of HONO in Xi'an was 1.2 +/- 0.8 ppbv, and that in Xianyang was 1.2 +/- 1.1 ppbv. The nighttime HONO mixing ratio was higher in Xianyang, while the daytime HONO was higher in Xi'an. Compared with the contribution from heterogeneous process of NO2, direct emissions and homogeneous processes (NO + OH) were less important for nocturnal HONO formation in these two cities. The relative contribution of heterogeneous process in Xianyang was more important than that in Xi'an. The reaction of NO2 upon aerosols surface was identified as an important source of HONO for two sites. The conversion of NO2 on the other surfaces might attend the heterogeneous formation of HONO in Xianyang site. Daytime HONO budget analysis indicated that there was an additional unknown formation process of HONO at two sites. The net OH production rate from HONO (from 08:00 to 17:00) was 1.6 x 10(7) and 1.3 x 10(7) molecule/(cm(3) s) for Xian and Xianyang, 5.2 and 3.5 times higher than from O-3 photolysis. Besides, a dust storm appeared during this observation period, and the impact of local emission and transport processes was separately analyzed. The sources, characteristics, and effects of HONO identified in this study laid a foundation for further research on HONO and air pollution in the Guanzhong area.
资助项目	National Natural Science Foundation of China[41830106] ; National Natural Science Foundation of China[41931287] ; National Atmospheric Research Program[2017YFC0212200] ; Beijing National Laboratory for Molecular Sciences[BNLMS-CXXM-202011] ; Youth Innovation Promotion Association CAS[2017042]
WOS关键词	ASIAN DUST STORM ; HETEROGENEOUS FORMATION ; HO2 CONCENTRATIONS ; RADICAL CHEMISTRY ; MEGAPOLI SUMMER ; INLAND CHINA ; URBAN AREA ; RURAL SITE ; MODELED OH ; DAYTIME
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000696800500002
资助机构	National Natural Science Foundation of China ; National Atmospheric Research Program ; Beijing National Laboratory for Molecular Sciences ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17055]
专题	中国科学院地球环境研究所
通讯作者	Tong, Shengrui
作者单位	1.Chinese Acad Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci BNLMS, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 4.Max Planck Inst Chem, Multiphase Chem Dept, Mainz, Germany 5.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China 6.Univ Chinese Acad Sci, Beijing, Peoples R China 7.Anhui Normal Univ, Anhui Lab Mol Based Mat, Coll Chem & Mat Sci, Key Lab Funct Mol Solids,Minist Educ, Wuhu, Peoples R China
推荐引用方式 GB/T 7714	Li, Weiran,Tong, Shengrui,Cao, Junji,et al. Comparative observation of atmospheric nitrous acid (HONO) in Xi'an and Xianyang located in the GuanZhong basin of western China[J]. ENVIRONMENTAL POLLUTION,2021,289:9.
APA	Li, Weiran.,Tong, Shengrui.,Cao, Junji.,Su, Hang.,Zhang, Wenqian.,...&Ge, Maofa.(2021).Comparative observation of atmospheric nitrous acid (HONO) in Xi'an and Xianyang located in the GuanZhong basin of western China.ENVIRONMENTAL POLLUTION,289,9.
MLA	Li, Weiran,et al."Comparative observation of atmospheric nitrous acid (HONO) in Xi'an and Xianyang located in the GuanZhong basin of western China".ENVIRONMENTAL POLLUTION 289(2021):9.