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Evaluation of a Portable Aerosol Collector and Spectrometer to measure particle concentration by composition and size

Supporting Files
File Language:
English


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  • Alternative Title:
    Aerosol Sci Technol
  • Personal Author:
  • Description:
    We evaluated a newly developed Portable Aerosol Collector and Spectrometer (PACS) in the laboratory. We developed an algorithm to estimate mass concentration by size and composition with a PACS. In laboratory experiments, we compared particle size distributions measured with the PACS to research instruments for multi-modal aerosols: two-mode generated by spark discharge, consisting of ultrafine (fresh Mn fume) and fine particles (aged Cu fume); and three-mode produced by adding coarse particles (Arizona road dust) to the two-mode. Near-real-time size distributions from the PACS compared favorably to those from a scanning mobility particle sizer and an aerodynamic particle sizer for the three-mode aerosol (number, | and |; surface area, |, |; mass, |, |), but less so for the two-mode aerosol (number, | and |; surface area, |, |; for mass, |, |). Elemental mass concentrations by size were similar to those measured with a nano micro-orifice uniform deposition impactor for coarse-mode particles, whereas agreement was considerably poorer for ultrafine- and fine-mode particles. The PACS has merit in estimating multi-metric concentrations by size and composition but requires further research to resolve discrepancies identified for two-mode aerosol.
  • Source:
    Aerosol Sci Technol. 53(6):675-687
  • Pubmed ID:
    37736266
  • Pubmed Central ID:
    PMC10512808
  • Document Type:
    Journal Article
  • Funding:
  • Volume:
    53
  • Issue:
    6
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:c8a018628fd5f3284b084a932a023a064db14e555b018883920e5a3ff91bab3e
  • Download URL:
  • File Type:
    Filetype[PDF - 1.51 MB ]
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