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Open AccessArticle

Activation of sub 2 nm Water Soluble and Insoluble Standard Ions with Saturated Vapors of Butanol in a Boosted TSI Ultrafine CPC.

1
LISA, UMR7583, Université Paris-Est-Créteil, Université de Paris, Institut Pierre Simon Laplace (IPSL), 61 Avenue du Général de Gaulle, 94010 Créteil, France
2
Department of Physical Sciences, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(11), 665; https://doi.org/10.3390/atmos10110665
Received: 15 July 2019 / Revised: 21 October 2019 / Accepted: 22 October 2019 / Published: 30 October 2019
(This article belongs to the Special Issue Ambient Aerosol Measurements in Different Environments)
Tetraheptylammonium bromide (THABr), tetrabutylammonium bromide (TBABr) and tetraethylammonium bromide (TEABr) dissolved in methanol or water methanol mixtures (~ 1mM) produce via positive electrospray atomization and high resolution classification electrical classification standard clean ions (monomer and dimer) which are singly charged. THABr is hydrophobic and insoluble in water, TBABr and TEABr are hygroscopic and water soluble (0.6 and 2.8 kg/l respectively). These ions are used to study the effect of hygroscopicity on the activation of aerosol particles in the sub 2 nm range via the detection efficiency measurement of a boosted ultrafine TSI condensation particle counter (3025A). Water solubility of particles seems to play a role in the activation and growth with butanol vapor in the CPC (condensation particle counter) independently of the size.
Keywords: CPC; DMA; water soluble; sub 2 nm particles; nucleation; activation; growth; butanol. CPC; DMA; water soluble; sub 2 nm particles; nucleation; activation; growth; butanol.
MDPI and ACS Style

Attoui, M.; Kangasluoma, J. Activation of sub 2 nm Water Soluble and Insoluble Standard Ions with Saturated Vapors of Butanol in a Boosted TSI Ultrafine CPC.. Atmosphere 2019, 10, 665.

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