Electric wind in a Differential Mobility Analyzer
Abstract
Electric wind -- the movement of gas, induced by ions moving in an electric field -- can be a distorting factor in size distribution measurements using Differential Mobility Analyzers (DMAs). The aim of this study was to determine the conditions under which electric wind occurs in the locally-built VLDMA (Very Long Differential Mobility Analyzer) and TSI Long-DMA (3081) and to describe the associated distortion of the measured spectra. Electric wind proved to be promoted by the increase of electric field strength, aerosol layer thickness, particle number concentration and particle size. The measured size spectra revealed three types of distortion: widening of the size distribution, shift of the mode of the distribution to smaller diameters and smoothing out the peaks of the multiply charged particles. Electric wind may therefore be a source of severe distortion of the spectrum when measuring large particles at high concentrations.
- Authors:
-
- Univ. of Tartu, Tartu (Estonia)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1239782
- Report Number(s):
- BNL-111646-2015-JA
Journal ID: ISSN 1239-6095; R&D Project: 2016-BNL-EE630EECA-Budg; KP1701000
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Boreal Environment Research
- Additional Journal Information:
- Journal Volume: 21; Journal Issue: 3-4; Journal ID: ISSN 1239-6095
- Publisher:
- Finnish Environment Institute
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Palo, Marus, Meelis Eller, Uin, Janek, and Tamm, Eduard. Electric wind in a Differential Mobility Analyzer. United States: N. p., 2015.
Web.
Palo, Marus, Meelis Eller, Uin, Janek, & Tamm, Eduard. Electric wind in a Differential Mobility Analyzer. United States.
Palo, Marus, Meelis Eller, Uin, Janek, and Tamm, Eduard. Sun .
"Electric wind in a Differential Mobility Analyzer". United States. https://www.osti.gov/servlets/purl/1239782.
@article{osti_1239782,
title = {Electric wind in a Differential Mobility Analyzer},
author = {Palo, Marus and Meelis Eller and Uin, Janek and Tamm, Eduard},
abstractNote = {Electric wind -- the movement of gas, induced by ions moving in an electric field -- can be a distorting factor in size distribution measurements using Differential Mobility Analyzers (DMAs). The aim of this study was to determine the conditions under which electric wind occurs in the locally-built VLDMA (Very Long Differential Mobility Analyzer) and TSI Long-DMA (3081) and to describe the associated distortion of the measured spectra. Electric wind proved to be promoted by the increase of electric field strength, aerosol layer thickness, particle number concentration and particle size. The measured size spectra revealed three types of distortion: widening of the size distribution, shift of the mode of the distribution to smaller diameters and smoothing out the peaks of the multiply charged particles. Electric wind may therefore be a source of severe distortion of the spectrum when measuring large particles at high concentrations.},
doi = {},
journal = {Boreal Environment Research},
number = 3-4,
volume = 21,
place = {United States},
year = {Sun Oct 25 00:00:00 EDT 2015},
month = {Sun Oct 25 00:00:00 EDT 2015}
}
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