The high charge fraction of flame-generated particles in the size range below 3 nm measured by enhanced particle detectors

Show full item record



Permalink

http://hdl.handle.net/10138/307935

Citation

Wang , Y , Kangasluoma , J , Attoui , M , Fang , J , Junninen , H , Kulmala , M , Petäjä , T & Biswas , P 2017 , ' The high charge fraction of flame-generated particles in the size range below 3 nm measured by enhanced particle detectors ' , Combustion and Flame , vol. 176 , pp. 72-80 . https://doi.org/10.1016/j.combustflame.2016.10.003

Title: The high charge fraction of flame-generated particles in the size range below 3 nm measured by enhanced particle detectors
Author: Wang, Yang; Kangasluoma, Juha; Attoui, Michel; Fang, Jiaxi; Junninen, Heikki; Kulmala, Markku; Petäjä, Tuukka; Biswas, Pratim
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2017-02
Language: eng
Number of pages: 9
Belongs to series: Combustion and Flame
ISSN: 0010-2180
URI: http://hdl.handle.net/10138/307935
Abstract: Charging in flames significantly affects the properties of the resultant particles produced because of its influence in almost all stages of particle formation. The charging characteristics of flame-generated sub 3 nm particles were investigated with three enhanced particle detectors including a high resolution differential mobility analyzer (DMA) coupled with an electrometer, a particle size magnifier coupled with a butanol-based condensation particle counter (PSM-bCPC), and an atmospheric pressure interface time-of-flight mass spectrometer (APi-TOF). Up to 95% of the flame-generated sub-3 nm particles were charged at a sampling height of 5 mm above the burner, indicating the existence of a strong ionization process in the investigated flame. This high fraction of charged particles contradicts the classical charging theories, which predict
Subject: Flame synthesis
Charge fraction
Sub-3 nm particle
Titanium dioxide
Differential mobility analyzer
Mass spectrometry
ATMOSPHERIC AEROSOL NUCLEATION
DIFFERENTIAL MOBILITY ANALYSIS
HIGH-RESOLUTION MOBILITY
DETAILED ION CHEMISTRY
METHANE-OXYGEN FLAMES
NEGATIVE-IONS
SULFURIC-ACID
SOOT PARTICLES
MASS-SPECTROMETER
PREMIXED FLAMES
114 Physical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
CombustFlame_2017.pdf 904.6Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record