气候变化领域集成服务门户(CCPortal): Enrichment of submicron sea-salt-containing particles in small cloud droplets based on single-particle mass spectrometry

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DOI	10.5194/acp-19-10469-2019
	Enrichment of submicron sea-salt-containing particles in small cloud droplets based on single-particle mass spectrometry
	Lin Q.; Yang Y.; Fu Y.; Zhang G.; Jiang F.; Peng L.; Lian X.; Liu F.; Bi X.; Li L.; Chen D.; Li M.; Ou J.; Tang M.; Wang X.; Peng P.; Sheng G.
发表日期	2019
ISSN	16807316
起始页码	10469
结束页码	10479
卷号	19 期号:16
英文摘要	The effects of the chemical composition and size of sea-salt-containing particles on their cloud condensation nuclei (CCN) activity are incompletely understood. We used a ground-based counterflow virtual impactor (GCVI) coupled with a single-particle aerosol mass spectrometer (SPAMS) to characterize chemical composition of submicron (dry diameter of 0.2-1.0μ) and supermicron (1.0-2.0μ) sea-salt-containing cloud residues (dried cloud droplets) at Mount Nanling, southern China. Seven cut sizes (7.5-14μ) of cloud droplets were set in the GCVI system. The highest number fraction of sea-salt-containing particles was observed at the cut size of 7.5μ (26%, by number), followed by 14μ (17%) and the other cut sizes (3%-5%). The submicron sea-salt-containing cloud residues contributed approximately 20% (by number) at the cut size of 7.5μ, which was significantly higher than the percentages at the cut sizes of 8-14μ (below 2%). This difference was likely involved in the change in the chemical composition. At the cut size of 7.5μ, nitrate was internally mixed with over 90% of the submicron sea-salt-containing cloud residues, which was higher than sulfate (20%), ammonium (below 1%), amines (6%), hydrocarbon organic species (2%), and organic acids (4%). However, at the cut sizes of 8-14μ, nitrate, sulfate, ammonium, amines, hydrocarbon organic species, and organic acids were internally mixed with & 90%, & 80%, 39%-84%, 71%-86%, 52%-90%, and 32%-77% of the submicron sea-salt-containing cloud residues. The proportion of sea-salt-containing particles in the supermicron cloud residues generally increased as a function of cut size, and their CCN activity was less influenced by chemical composition. This study provided a significant contribution towards a comprehensive understanding of sea-salt CCN activity. © Author(s) 2019.
语种	英语
scopus关键词	chemical composition; cloud condensation nucleus; cloud droplet; mass spectrometry; particle size; sea salt; China; Nanling
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/144208
作者单位	State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese, Academy of Sciences, Beijing, 100039, China; Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, China; State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Guangdong Environmental Monitoring Center, Guangzhou, 510308, China; Shaoguan Environmental Monitoring Center, Shaoguan, 512026, China; College of Economics and Management, Taiyuan University of Technology, Taiyuan, 030024, China
推荐引用方式 GB/T 7714	Lin Q.,Yang Y.,Fu Y.,et al. Enrichment of submicron sea-salt-containing particles in small cloud droplets based on single-particle mass spectrometry[J],2019,19(16).
APA	Lin Q..,Yang Y..,Fu Y..,Zhang G..,Jiang F..,...&Sheng G..(2019).Enrichment of submicron sea-salt-containing particles in small cloud droplets based on single-particle mass spectrometry.Atmospheric Chemistry and Physics,19(16).
MLA	Lin Q.,et al."Enrichment of submicron sea-salt-containing particles in small cloud droplets based on single-particle mass spectrometry".Atmospheric Chemistry and Physics 19.16(2019).