气候变化领域集成服务门户(CCPortal): Measurement report: Molecular characteristics of cloud water in southern China and insights into aqueous-phase processes from Fourier transform ion cyclotron resonance mass spectrometry

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DOI	10.5194/acp-21-16631-2021
	Measurement report: Molecular characteristics of cloud water in southern China and insights into aqueous-phase processes from Fourier transform ion cyclotron resonance mass spectrometry
	Sun W.; Fu Y.; Zhang G.; Yang Y.; Jiang F.; Lian X.; Jiang B.; Liao Y.; Bi X.; Chen D.; Chen J.; Wang X.; Ou J.; Peng P.; Sheng G.
发表日期	2021
ISSN	1680-7316
起始页码	16631
结束页码	16644
卷号	21 期号:22
英文摘要	Characterizing the molecular composition of cloud water could provide unique insights into aqueous chemistry. Field measurements were conducted at Mt. Tianjing in southern China in May, 2018. There are thousands of formulas (C5-30H4-55O1-15N0-2S0-2) identified in cloud water by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). CHON formulas (formulas containing C, H, O, and N elements; the same is true for CHO and CHOS) represent the dominant component (43.6g %-65.3g % of relative abundance), followed by CHO (13.8g %-52.1%). S-containing formulas constitute g 1/45g %-20g % of all assigned formulas. Cloud water has a relative-Abundance-weighted average O/C of 0.45-0.56, and the double bond equivalent of 5.10-5.70. Most of the formulas (>85g %) are assigned as aliphatic and olefinic species. No statistical difference in the oxidation state is observed between cloud water and interstitial PM2.5. CHON with aromatic structures are abundant in cloud water, suggesting their enhanced in-cloud formation. Other organics in cloud water are mainly from biomass burning and oxidation of biogenic volatile organic compounds. The cloud water contains more abundant CHON and CHOS at night, which are primarily contributed by-N2O5 function and organosulfates, demonstrating the enhanced formation in dark aqueous or multi-phase reactions. While more abundant CHO is observed during the daytime, likely due to the photochemical oxidation and photolysis of N-or S-containing formulas. The results provide an improved understanding of the in-cloud aqueous-phase reactions. © Copyright:
语种	英语
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/246441
作者单位	State Key Lab. of Organ. Geochem. and Guangdong Key Lab. of Environ. Protect. and Rsrc. Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Cas Center for Excellence in Deep Earth Science, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Guangdong Environmental Monitoring Center, Guangzhou, 510308, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Shaoguan Environmental Monitoring Center, Shaoguan, 512026, China; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, 76344, German...
推荐引用方式 GB/T 7714	Sun W.,Fu Y.,Zhang G.,et al. Measurement report: Molecular characteristics of cloud water in southern China and insights into aqueous-phase processes from Fourier transform ion cyclotron resonance mass spectrometry[J],2021,21(22).
APA	Sun W..,Fu Y..,Zhang G..,Yang Y..,Jiang F..,...&Sheng G..(2021).Measurement report: Molecular characteristics of cloud water in southern China and insights into aqueous-phase processes from Fourier transform ion cyclotron resonance mass spectrometry.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(22).
MLA	Sun W.,et al."Measurement report: Molecular characteristics of cloud water in southern China and insights into aqueous-phase processes from Fourier transform ion cyclotron resonance mass spectrometry".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.22(2021).