气候变化领域集成服务门户(CCPortal): Anthropogenic and biogenic hydrophobic VOCs detected in clouds at the puy de Dôme station using Stir Bar Sorptive Extraction: Deviation from the Henry's law prediction

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DOI	10.1016/j.atmosres.2020.104844
	Anthropogenic and biogenic hydrophobic VOCs detected in clouds at the puy de Dôme station using Stir Bar Sorptive Extraction: Deviation from the Henry's law prediction
	Wang M.; Perroux H.; Fleuret J.; Bianco A.; Bouvier L.; Colomb A.; Borbon A.; Deguillaume L.
发表日期	2020
ISSN	1698095
卷号	237
英文摘要	Cloud droplets are able to trap many gaseous compounds and represent a very reactive media in the atmosphere. However, phase-partitioning of Volatile Organic Compounds (VOCs) between gaseous phase (interstitial air) and atmospheric liquid phase (cloud droplets) is still poorly characterized. In the present work, air samples and cloud water were collected simultaneously and hydrophobic organic compounds from anthropogenic and biogenic origins were quantified in order to evaluate their air/water partitioning. For this, cloud events were sampled at the puy de Dôme station (PUY). A new analytical approach was optimized to explore dissolved VOCs in the aqueous phase by Stir Bar Sorptive Extraction (SBSE) and gaseous samples were collected using sorbent tubes. All samples were analyzed by Thermal Desorption (TD) Gas Chromatography (GC) coupled with Mass Spectrometry (MS). Extraction efficiencies by SBSE vary between 22% and 97% and the detection limit of VOCs in aqueous cloud samples lies between 1.0 and 8.7 ng L−1. Experimental partitioning is evaluated towards the theoretical one described by the Henry's Law constants. Our results show that observed concentrations of hydrophobic VOCs are supersaturated by a factor of 10–103 in comparison with Henry's law equilibrium. Calculations have been performed to evaluate the potential role of adsorption at the air/water interface and of sorption with non-dissolved organic carbon. However, the supersaturation in the cloud droplets requires more laboratory experiments to understand processes at the air/water interface and constrain cloud chemistry models. © 2020
英文关键词	Cloud; Gas-liquid partitioning; Henry's law; PUY station; Stir Bar Sorptive Extraction (SBSE); Volatile organic compounds (VOCs)
学科领域	Air quality; Clouds; Drops; Gas chromatography; Hydrophobicity; Mass spectrometry; Organic carbon; Phase interfaces; Volatile organic compounds; Cloud-chemistry models; Dissolved organic carbon; Extraction efficiencies; Gas liquids; Henry's law; Hydrophobic organic compound; PUY station; Stir bar sorptive extraction; Extraction; adsorption; cloud; cloud droplet; concentration (composition); extraction method; partitioning; volatile organic compound; Auvergne-Rhone-Alpes; France; Puy de Dome [Auvergne-Rhone-Alpes]
语种	英语
scopus关键词	Air quality; Clouds; Drops; Gas chromatography; Hydrophobicity; Mass spectrometry; Organic carbon; Phase interfaces; Volatile organic compounds; Cloud-chemistry models; Dissolved organic carbon; Extraction efficiencies; Gas liquids; Henry's law; Hydrophobic organic compound; PUY station; Stir bar sorptive extraction; Extraction; adsorption; cloud; cloud droplet; concentration (composition); extraction method; partitioning; volatile organic compound; Auvergne-Rhone-Alpes; France; Puy de Dome [Auvergne-Rhone-Alpes]
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120444
作者单位	Université Clermont Auvergne, Laboratoire de Météorologie Physique, OPGC/CNRS UMR 6016, Clermont-Ferrand, France; Université Clermont Auvergne, Observatoire de Physique du Globe de Clermont-Ferrand, UMS 833, Clermont-Ferrand, France
推荐引用方式 GB/T 7714	Wang M.,Perroux H.,Fleuret J.,et al. Anthropogenic and biogenic hydrophobic VOCs detected in clouds at the puy de Dôme station using Stir Bar Sorptive Extraction: Deviation from the Henry's law prediction[J],2020,237.
APA	Wang M..,Perroux H..,Fleuret J..,Bianco A..,Bouvier L..,...&Deguillaume L..(2020).Anthropogenic and biogenic hydrophobic VOCs detected in clouds at the puy de Dôme station using Stir Bar Sorptive Extraction: Deviation from the Henry's law prediction.Atmospheric Research,237.
MLA	Wang M.,et al."Anthropogenic and biogenic hydrophobic VOCs detected in clouds at the puy de Dôme station using Stir Bar Sorptive Extraction: Deviation from the Henry's law prediction".Atmospheric Research 237(2020).