气候变化领域集成服务门户(CCPortal): Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy

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DOI	10.5194/acp-21-4709-2021
	Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy
	Lin J.J.; Raj R K.; Wang S.; Kokkonen E.; Mikkelä M.-H.; Urpelainen S.; Prisle N.L.
发表日期	2021
ISSN	1680-7316
起始页码	4709
结束页码	4727
卷号	21 期号:6
英文摘要	We study the adsorption of water onto deposited inorganic sodium chloride and organic malonic acid and sucrose nanoparticles at ambient water pressures corresponding to relative humidities (RH) from 0 % to 16 %. To obtain information about water adsorption at conditions which are not accessible with typical aerosol instrumentation, we use surface-sensitive ambient pressure X-ray photoelectron spectroscopy (APXPS), which has a detection sensitivity starting at parts per thousand. Our results show that water is already adsorbed on sodium chloride particles at RH well below deliquescence and that the chemical environment on the particle surface is changing with increasing humidity. While the sucrose particles exhibit only very modest changes on the surface at these relative humidities, the chemical composition and environment of malonic acid particle surfaces is clearly affected. Our observations indicate that water uptake by inorganic and organic aerosol particles could already have an impact on atmospheric chemistry at low relative humidities. We also establish the APXPS technique as a viable tool for studying chemical changes on the surfaces of atmospherically relevant aerosol particles which are not detected with typical online mass-and volume-based methods. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	adsorption; atmospheric pressure; nanoparticle; organic acid; relative humidity; sodium chloride; sucrose; water; X-ray spectroscopy
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/247024
作者单位	Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, Oulu, 90014, Finland; Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, United States; MAX IV Laboratory, Lund University, Box 118, Lund, 22100, Sweden; Center for Atmospheric Research, University of Oulu, P.O. Box 4500, Oulu, 90014, Finland
推荐引用方式 GB/T 7714	Lin J.J.,Raj R K.,Wang S.,et al. Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy[J],2021,21(6).
APA	Lin J.J..,Raj R K..,Wang S..,Kokkonen E..,Mikkelä M.-H..,...&Prisle N.L..(2021).Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(6).
MLA	Lin J.J.,et al."Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.6(2021).