Pre-deliquescent water uptake in deposited nanoparticles observed with <i>in situ</i> ambient pressure X-ray photoelectron spectroscopy

doi:10.5194/acp-2020-330

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-330
	*Pre-deliquescent water uptake in deposited nanoparticles observed with in situ* ambient pressure X-ray photoelectron spectroscopy**
	Jack J. Lin, Kamal Raj R, Stella Wang, Esko Kokkonen, Mikko-Heikki Mikkelä, Samuli Urpelainen, and Nønne L. Prisle
	2020-04-29
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
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 uptake at conditions where not accessible with typical aerosol instrumentation, we use surface-sensitive ambient pressure X-ray photoelectron spectroscopy (APXPS), which has a detection sensitivity from 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 conclude that the APXPS technique is a viable tool for studying chemical changes on the surfaces of atmospherically relevant aerosol particles which are not accessible with typical online mass- and volume-based methods.
领域	地球科学
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/248874
专题	地球科学
推荐引用方式 GB/T 7714	Jack J. Lin, Kamal Raj R, Stella Wang, Esko Kokkonen, Mikko-Heikki Mikkelä, Samuli Urpelainen, and Nønne L. Prisle. Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy[J]. Atmospheric Chemistry and Physics,2020.
APA	Jack J. Lin, Kamal Raj R, Stella Wang, Esko Kokkonen, Mikko-Heikki Mikkelä, Samuli Urpelainen, and Nønne L. Prisle.(2020).Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy.Atmospheric Chemistry and Physics.
MLA	Jack J. Lin, Kamal Raj R, Stella Wang, Esko Kokkonen, Mikko-Heikki Mikkelä, Samuli Urpelainen, and Nønne L. Prisle."Pre-deliquescent water uptake in deposited nanoparticles observed with in situ ambient pressure X-ray photoelectron spectroscopy".Atmospheric Chemistry and Physics (2020).