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Exploring the Effect of Particle Loading Density on Respirable Dust Classification by SEM-EDX

dc.contributor.authorSweeney, Danielen
dc.contributor.authorKeles, Cigdemen
dc.contributor.authorSarver, Emilyen
dc.date.accessioned2024-07-29T13:26:20Zen
dc.date.available2024-07-29T13:26:20Zen
dc.date.issued2024-07-20en
dc.date.updated2024-07-26T12:29:16Zen
dc.description.abstractExposure to respirable coal mine dust (RCMD) still poses health risks to miners. Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) is a powerful tool for RCMD characterization because it provides particle-level data, including elemental ratios (via the EDX signals) that can enable classification by inferred mineralogy. However, if the particle loading density (PLD) is high on the analyzed substrate (filter sample), interference between neighboring particles could cause misclassification. To investigate this possibility, a two-part study was conducted. First, the effect of PLD on RCMD classification was isolated by comparing dust particles recovered from the same parent filters under both low- and high-PLD conditions, and a set of modified classification criteria were established to correct for high PLD. Second, the modified criteria were applied to RCMD particles on pairs of filters, with each pair having one filter that was analyzed directly (frequently high PLD) and another filter from which particles were recovered and redeposited prior to analysis (frequently lower PLD). It was expected that application of the modified criteria would improve the agreement between mineralogy distributions for paired filters; however, relatively little change was observed for most pairs. These results suggest that factors other than PLD, including particle agglomeration, can have a substantial effect on the particle EDX data collected during direct-on-filter analysis.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSweeney, D.; Keles, C.; Sarver, E. Exploring the Effect of Particle Loading Density on Respirable Dust Classification by SEM-EDX. Minerals 2024, 14, 728.en
dc.identifier.doihttps://doi.org/10.3390/min14070728en
dc.identifier.urihttps://hdl.handle.net/10919/120735en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectSEM-EDXen
dc.subjectrespirable coal mine dusten
dc.subjectblack lungen
dc.subjectairborne particle analysisen
dc.titleExploring the Effect of Particle Loading Density on Respirable Dust Classification by SEM-EDXen
dc.title.serialMineralsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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