Journal article
Evaluation of a Portable Aerosol Collector and Spectrometer to measure particle concentration by composition and size
Aerosol science and technology, Vol.53(6), pp.675-687
06/03/2019
DOI: 10.1080/02786826.2019.1600654
PMCID: PMC10512808
PMID: 37736266
Abstract
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, bias = 9.4% and R2 = 0.96; surface area, bias = 17.8%, R2 = 0.77; mass, bias = −2.2%, R2 = 0.94), but less so for the two-mode aerosol (number, bias = −17.7% and R2 = 0.51; surface area, bias = −45.5%, R2 = 0; for mass, bias = −81.75%, R2 = 0.08). 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. Copyright © 2019 American Association for Aerosol Research.
Details
- Title: Subtitle
- Evaluation of a Portable Aerosol Collector and Spectrometer to measure particle concentration by composition and size
- Creators
- Changjie Cai - Department of Occupational and Environmental Health, University of Oklahoma Health Sciences Center, University of Oklahoma, Oklahoma City, Oklahoma, USALarissa V Stebounova - Department of Occupational and Environmental Health, The University of Iowa, Iowa City, Iowa, USADavid W Peate - Department of Earth and Environmental Sciences, The University of Iowa, Iowa City, Iowa, USAThomas M Peters - Department of Occupational and Environmental Health, The University of Iowa, Iowa City, Iowa, USA
- Resource Type
- Journal article
- Publication Details
- Aerosol science and technology, Vol.53(6), pp.675-687
- DOI
- 10.1080/02786826.2019.1600654
- PMID
- 37736266
- PMCID
- PMC10512808
- NLM abbreviation
- Aerosol Sci Technol
- ISSN
- 0278-6826
- eISSN
- 1521-7388
- Language
- English
- Date published
- 06/03/2019
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health; Earth and Environmental Sciences; Honors Program
- Record Identifier
- 9984214848502771
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