Sampling errors associated with sampling plate-like particles using the Higgins- and Dewell-type personal respirable cyclone

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3 Citations (Scopus)

Abstract

An investigation has been carried out into possible differences in personal Higgins- and Dewell-type cyclone performance when sampling plate-like particles such as talc or metallic flakes, in contrast to spherical particles. Theoretical calculations indicate that particle shape effects will be dominated by particles assuming a preferred orientation that is different in the respiratory system and the cyclone. Experimental comparisons with MRE 113A horizontal elutriators indicated talc particles to align randomly in the cyclone. If a maximum drag orientation is assumed in the respiratory system, this will lead to the respirable fraction of an aerosol of plate-like particles being underestimated by approximately 15% on average. However, more information is needed on how non-spherical particles behave in the respiratory tract before the degree of undersampling can be further quantified.

Original languageEnglish (US)
Pages (from-to)575-585
Number of pages11
JournalJournal of Aerosol Science
Volume27
Issue number4
DOIs
StatePublished - Jun 1996
Externally publishedYes

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cyclone
Respiratory system
Talc
Sampling
sampling
Aerosols
talc
Particles (particulate matter)
Drag
preferred orientation
particle
drag
aerosol

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)

Cite this

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title = "Sampling errors associated with sampling plate-like particles using the Higgins- and Dewell-type personal respirable cyclone",
abstract = "An investigation has been carried out into possible differences in personal Higgins- and Dewell-type cyclone performance when sampling plate-like particles such as talc or metallic flakes, in contrast to spherical particles. Theoretical calculations indicate that particle shape effects will be dominated by particles assuming a preferred orientation that is different in the respiratory system and the cyclone. Experimental comparisons with MRE 113A horizontal elutriators indicated talc particles to align randomly in the cyclone. If a maximum drag orientation is assumed in the respiratory system, this will lead to the respirable fraction of an aerosol of plate-like particles being underestimated by approximately 15{\%} on average. However, more information is needed on how non-spherical particles behave in the respiratory tract before the degree of undersampling can be further quantified.",
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AB - An investigation has been carried out into possible differences in personal Higgins- and Dewell-type cyclone performance when sampling plate-like particles such as talc or metallic flakes, in contrast to spherical particles. Theoretical calculations indicate that particle shape effects will be dominated by particles assuming a preferred orientation that is different in the respiratory system and the cyclone. Experimental comparisons with MRE 113A horizontal elutriators indicated talc particles to align randomly in the cyclone. If a maximum drag orientation is assumed in the respiratory system, this will lead to the respirable fraction of an aerosol of plate-like particles being underestimated by approximately 15% on average. However, more information is needed on how non-spherical particles behave in the respiratory tract before the degree of undersampling can be further quantified.

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