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DOI	10.5194/acp-22-14837-2022
	Formation and impacts of nitryl chloride in Pearl River Delta
	Wang, Haichao; Yuan, Bin; Zheng, E.; Zhang, Xiaoxiao; Wang, Jie; Lu, Keding; Ye, Chenshuo; Yang, Lei; Huang, Shan; Hu, Weiwei; Yang, Suxia; Peng, Yuwen; Qi, Jipeng; Wang, Sihang; He, Xianjun; Chen, Yubin; Li, Tiange; Wang, Wenjie; Huangfu, Yibo; Li, Xiaobing; Cai, Mingfu; Wang, Xuemei; Shao, Min
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	14837
结束页码	14858
卷号	22 期号:22 页码:22
英文摘要	Here we present a field measurement of ClNO2 (nitryl chloride) and N2O5 (dinitrogen pentoxide) by a time-of-flight chemical ionization mass spectrometer (ToF-CIMS) with the Filter Inlet for Gas and AEROsols (FIGAERO) at a regional site in the Pearl River Delta during a photochemical pollution season from 26 September to 17 November 2019. Three patterns of air masses are sampled during this campaign, including the dominating air masses from the north and northeast urban regions (Type A), the southeast coast (Type B), and the South China Sea (Type C). The concentration of ClNO2 and N2O5 was observed to be much higher in Type A and B than in Type C, indicating that the urban nighttime chemistry is more active than the background marine regions. The N2O5 uptake coefficient and ClNO2 production yield were estimated based on the field measurement, and the performance of the previously derived parameterizations was assessed. The nighttime ClNO2 correlated with particulate chloride and the mass concentration of fine particles (most likely due to aerosol surface area) suggested that the ClNO2 formation was limited by the N2O5 uptake at this site. By examining the relationship between particulate chloride and other species, we implied that anthropogenic emissions (e.g., biomass burning) rather than sea salt particles dominate the origin of particulate chloride, although the site was only about 100 km away from the ocean. A box model with detailed chlorine chemistry is used to investigate the impacts of ClNO2 chemistry on atmospheric oxidation. Model simulations showed that the chlorine radical liberated by ClNO2 photolysis during the next day had a slight increase in concentrations of OH, HO2, and RO2 radicals, as well as minor contributions to RO2 radical and O-3 formation (< 5 %, on daytime average), in all the three types of air masses. Relatively high contributions were observed in Type A and B. The overall low contributions of ClNO2 to atmospheric oxidation are consistent with those reported recently from wintertime observations in China (including Shanghai, Beijing, Wangdu, and Mt. Tai). This may be attributed to the following: (1) relatively low particle mass concentration limited ClNO2 formation; (2) other reactions channels, like nitrous acid (HONO), oxygenated volatile organic compounds (OVOCs, including formaldehyde), and ozone photolysis had a more significant radical formation rate during the ozone pollution episodes and weakened the ClNO2 contribution indirectly. The results provided scientific insights into the role of nighttime chemistry in photochemical pollution under various scenarios in coastal areas.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000890942000001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273845
作者单位	Sun Yat Sen University; Jinan University; Southern Marine Science & Engineering Guangdong Laboratory; Southern Marine Science & Engineering Guangdong Laboratory (Zhuhai); Peking University; Peking University; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Max Planck Society
推荐引用方式 GB/T 7714	Wang, Haichao,Yuan, Bin,Zheng, E.,et al. Formation and impacts of nitryl chloride in Pearl River Delta[J],2022,22(22):22.
APA	Wang, Haichao.,Yuan, Bin.,Zheng, E..,Zhang, Xiaoxiao.,Wang, Jie.,...&Shao, Min.(2022).Formation and impacts of nitryl chloride in Pearl River Delta.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(22),22.
MLA	Wang, Haichao,et al."Formation and impacts of nitryl chloride in Pearl River Delta".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.22(2022):22.