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Title: A water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range

We developed a water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range. The WFIMS builds on two established technologies: the fast integrated mobility spectrometer and laminar flow water-based condensation methodology. Inside WFIMS, particles of differing electrical mobility are separated in a drift tube and subsequently enlarged through water condensation. Particle size and concentration are measured via digital imaging at a frame rate of 10 Hz. When we measure particles of different mobilities simultaneously, the WFIMS resolves particle diameters ranging from 8 to 580 nm within 1 s or less. The performance of WFIMS was characterized with differential mobility analyzer (DMA) classified (NH 4) 2SO 2 particles with diameters ranging from 8 to 265 nm. The mean particle diameters measured by WFIMS were found to be in excellent agreement with DMA centroid diameters. Furthermore, detection efficiency of WFIMS was characterized using a condensation particle counter as a reference and is nearly 100% for particles with diameter greater than 8 nm. In general, measured and simulated WFIMS mobility resolutions are in good agreement. But, some deviations are observed at low particle mobilities, likely due to the non-idealities of the WFIMS electric field.
Authors:
 [1] ;  [2] ;  [2] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Environmental and Climate Sciences Dept.
  2. Aerosol Dynamics Inc., Berkeley, CA (United States)
Publication Date:
Report Number(s):
BNL-113991-2017-JA
Journal ID: ISSN 0278-6826; R&D Project: 2016-BNL-EE630EECA-Budg; 87158; KP1701000
Grant/Contract Number:
SC00112704; SC0006312; AC02-98CH10886
Type:
Accepted Manuscript
Journal Name:
Aerosol Science and Technology
Additional Journal Information:
Journal Volume: 51; Journal Issue: 10; Journal ID: ISSN 0278-6826
Publisher:
American Association for Aerosol Research
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1366353

Pinterich, Tamara, Spielman, Steven R., Hering, Susanne, and Wang, Jian. A water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range. United States: N. p., Web. doi:10.1080/02786826.2017.1338664.
Pinterich, Tamara, Spielman, Steven R., Hering, Susanne, & Wang, Jian. A water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range. United States. doi:10.1080/02786826.2017.1338664.
Pinterich, Tamara, Spielman, Steven R., Hering, Susanne, and Wang, Jian. 2017. "A water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range". United States. doi:10.1080/02786826.2017.1338664. https://www.osti.gov/servlets/purl/1366353.
@article{osti_1366353,
title = {A water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range},
author = {Pinterich, Tamara and Spielman, Steven R. and Hering, Susanne and Wang, Jian},
abstractNote = {We developed a water-based fast integrated mobility spectrometer (WFIMS) with enhanced dynamic size range. The WFIMS builds on two established technologies: the fast integrated mobility spectrometer and laminar flow water-based condensation methodology. Inside WFIMS, particles of differing electrical mobility are separated in a drift tube and subsequently enlarged through water condensation. Particle size and concentration are measured via digital imaging at a frame rate of 10 Hz. When we measure particles of different mobilities simultaneously, the WFIMS resolves particle diameters ranging from 8 to 580 nm within 1 s or less. The performance of WFIMS was characterized with differential mobility analyzer (DMA) classified (NH4)2SO2 particles with diameters ranging from 8 to 265 nm. The mean particle diameters measured by WFIMS were found to be in excellent agreement with DMA centroid diameters. Furthermore, detection efficiency of WFIMS was characterized using a condensation particle counter as a reference and is nearly 100% for particles with diameter greater than 8 nm. In general, measured and simulated WFIMS mobility resolutions are in good agreement. But, some deviations are observed at low particle mobilities, likely due to the non-idealities of the WFIMS electric field.},
doi = {10.1080/02786826.2017.1338664},
journal = {Aerosol Science and Technology},
number = 10,
volume = 51,
place = {United States},
year = {2017},
month = {6}
}

Works referenced in this record:

A Method for Particle Size Amplification by Water Condensation in a Laminar, Thermally Diffusive Flow
journal, May 2005
  • Hering, Susanne; Stolzenburg, Mark
  • Aerosol Science and Technology, Vol. 39, Issue 5, p. 428-436
  • DOI: 10.1080/027868290953416