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Laboratory Study of H2SO4 / H2O Nucleation Using a New Technique - a Laminar Co-Flow Tube.

SYSNO ASEP	0488515
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Laboratory Study of H2SO4 / H2O Nucleation Using a New Technique - a Laminar Co-Flow Tube.
Author(s)	Trávníčková, Tereza (UCHP-M)_{RID, ORCID, SAI} Škrabalová, Lenka (UCHP-M)_RID Havlica, Jaromír (UCHP-M)_{RID, ORCID, SAI} Krejčí, A. Petr (UT-L) Hrubý, Jan (UT-L)_{RID, ORCID} Ždímal, Vladimír (UCHP-M)_{RID, ORCID, SAI}
Source Title	Tellus Series B-Chemical and Physical Meteorology. - : Wiley - ISSN 0280-6509 Roč. 70, č. 1 (2018), s. 1446643
Number of pages	12 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	co-flow ; nucleation ; sulphuric acid
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
Subject RIV - cooperation	Institute of Thermomechanics - Thermodynamics
R&D Projects	GAP105/12/0664 GA ČR - Czech Science Foundation (CSF)
	GA17-19798S GA ČR - Czech Science Foundation (CSF)
	EF16_013/0001315 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UCHP-M - RVO:67985858 ; UT-L - RVO:61388998
UT WOS	000428085600001
EID SCOPUS	85045271927
DOI	10.1080/16000889.2018.1446643
Annotation	Nucleation of aerosol particles from gaseous precursors is an important stage in the formation of atmospheric secondary aerosols or in industrial applications, particularly coal burning boilers. We introduce a novel laboratory device for studying binary or ternary nucleation – a laminar co-flow tube (LCFT) – and provide first data for the H2SO4/H2O system, showing that LCFT is able to cover a wide range of nucleation rates. The experimental set-up and the underlying transport processes are explained. Advantages of LCFT over methods employing turbulent mixing are suppression of wall losses and an accurate mathematical model. The determined nucleation rates are by about two orders of magnitude lower than typical literature values. Results of various nucleation experiments often show systematic differences unexplained by the present level of knowledge. Introduction of the LCFT technique based on a well-defined laminar diffusion process may help to identify the method-related biases.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2019

Number of the records: 1