Low-cost virtual impactor for large-particle amplification in optical particle counters

Frank Liebhaber, Matti Lehtimäki, Klaus Willeke

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

An easy-to-make virtual impactor was developed to be utilized as an accessory to optical particle counters. This simple, yet effective, virtual impactor can be used to optimize the sensitivity of optical particle counters to larger particles. A virtual impactor sized for use with a very low flow optical particle counter was built with a 37-mm cassette and a set of appropriately sized hypodermic needles. When evaluated, it multiplied the number concentration of 2- and 3-μm polystyrene latex particles by factors of 15 and 42, respectively. It magnified the number concentration of particles in polydispersed corn oil and salt aerosols and ambient laboratory air by similar amounts. Instructions on how to construct a virtual impactor with a 37-mm cassette, hypodermic needles, and common laboratory items while adhering to critical design parameters are presented.

Original languageEnglish
Pages (from-to)208 - 213
Number of pages6
JournalAerosol Science and Technology
Volume15
Issue number3
DOIs
Publication statusPublished - 1991
MoE publication typeA1 Journal article-refereed

Fingerprint

Radiation counters
Amplification
amplification
Needles
Particles (particulate matter)
cost
Costs
Corn Oil
Optical flows
Accessories
Aerosols
Latexes
Polystyrenes
Salts
Air
low flow
impactor
particle
maize
aerosol

Cite this

Liebhaber, Frank ; Lehtimäki, Matti ; Willeke, Klaus. / Low-cost virtual impactor for large-particle amplification in optical particle counters. In: Aerosol Science and Technology. 1991 ; Vol. 15, No. 3. pp. 208 - 213.
@article{67b681b95148460299006302f514ff7a,
title = "Low-cost virtual impactor for large-particle amplification in optical particle counters",
abstract = "An easy-to-make virtual impactor was developed to be utilized as an accessory to optical particle counters. This simple, yet effective, virtual impactor can be used to optimize the sensitivity of optical particle counters to larger particles. A virtual impactor sized for use with a very low flow optical particle counter was built with a 37-mm cassette and a set of appropriately sized hypodermic needles. When evaluated, it multiplied the number concentration of 2- and 3-μm polystyrene latex particles by factors of 15 and 42, respectively. It magnified the number concentration of particles in polydispersed corn oil and salt aerosols and ambient laboratory air by similar amounts. Instructions on how to construct a virtual impactor with a 37-mm cassette, hypodermic needles, and common laboratory items while adhering to critical design parameters are presented.",
author = "Frank Liebhaber and Matti Lehtim{\"a}ki and Klaus Willeke",
year = "1991",
doi = "10.1080/02786829108959528",
language = "English",
volume = "15",
pages = "208 -- 213",
journal = "Aerosol Science and Technology",
issn = "0278-6826",
publisher = "Taylor & Francis",
number = "3",

}

Low-cost virtual impactor for large-particle amplification in optical particle counters. / Liebhaber, Frank; Lehtimäki, Matti; Willeke, Klaus.

In: Aerosol Science and Technology, Vol. 15, No. 3, 1991, p. 208 - 213.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Low-cost virtual impactor for large-particle amplification in optical particle counters

AU - Liebhaber, Frank

AU - Lehtimäki, Matti

AU - Willeke, Klaus

PY - 1991

Y1 - 1991

N2 - An easy-to-make virtual impactor was developed to be utilized as an accessory to optical particle counters. This simple, yet effective, virtual impactor can be used to optimize the sensitivity of optical particle counters to larger particles. A virtual impactor sized for use with a very low flow optical particle counter was built with a 37-mm cassette and a set of appropriately sized hypodermic needles. When evaluated, it multiplied the number concentration of 2- and 3-μm polystyrene latex particles by factors of 15 and 42, respectively. It magnified the number concentration of particles in polydispersed corn oil and salt aerosols and ambient laboratory air by similar amounts. Instructions on how to construct a virtual impactor with a 37-mm cassette, hypodermic needles, and common laboratory items while adhering to critical design parameters are presented.

AB - An easy-to-make virtual impactor was developed to be utilized as an accessory to optical particle counters. This simple, yet effective, virtual impactor can be used to optimize the sensitivity of optical particle counters to larger particles. A virtual impactor sized for use with a very low flow optical particle counter was built with a 37-mm cassette and a set of appropriately sized hypodermic needles. When evaluated, it multiplied the number concentration of 2- and 3-μm polystyrene latex particles by factors of 15 and 42, respectively. It magnified the number concentration of particles in polydispersed corn oil and salt aerosols and ambient laboratory air by similar amounts. Instructions on how to construct a virtual impactor with a 37-mm cassette, hypodermic needles, and common laboratory items while adhering to critical design parameters are presented.

U2 - 10.1080/02786829108959528

DO - 10.1080/02786829108959528

M3 - Article

VL - 15

SP - 208

EP - 213

JO - Aerosol Science and Technology

JF - Aerosol Science and Technology

SN - 0278-6826

IS - 3

ER -