Application of X-ray diffraction with Rietveld refinement to quantify mineral composition including crystalline silica in respirable dust.
This study aimed to test the use of Rietveld refinement on respirable aerosol samples to determine the phase of respirable crystalline silica (RCS) and other minerals. The results from the Rietveld refinement were compared to an external standard method and gravimetrical measurements. Laboratory sam...
| Published in: | Journal of Occupational & Environmental Hygiene Vol. 22; no. 4; pp. 248 - 259 |
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| Main Authors: | , , , , |
| Format: | CEU research tables/charts Journal Article |
| Published: |
Taylor & Francis Ltd
Apr2025
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=184403097&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 184403097 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Apr2025 vid: 22 iid: 4 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 184403097 182069122 184403097 184403097 10.1080/15459624.2024.2443206 184403097 ppf: 248 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Application of X-ray diffraction with Rietveld refinement to quantify mineral composition including crystalline silica in respirable dust. aug: au: Halvorsen, Johanne Østereng Stacey, Peter Graff, Pål Folven Gjengedal, Elin Lovise Ervik, Torunn K. affil: STAMI, National Institute of Occupational Health, Oslo, Norway sug: subj: Dust Analysis Silicon Dioxide Analysis Air Pollutants, Occupational Analysis Minerals Analysis Environmental Monitoring Methods Human Regression Construction Materials Inhalation Exposure Occupational Exposure X-Rays Occupational Safety Occupational Health Wilcoxon Rank Sum Test Education, Continuing (Credit) ab: This study aimed to test the use of Rietveld refinement on respirable aerosol samples to determine the phase of respirable crystalline silica (RCS) and other minerals. The results from the Rietveld refinement were compared to an external standard method and gravimetrical measurements. Laboratory samples consisting of α-quartz, feldspar, and calcite with variable proportions and total mass loadings were made and analyzed using the NIOSH 7500 Silica, Crystalline, by XRD (filter redeposition) method, followed by Rietveld refinement. Field samples of respirable dust, from construction sites working with concrete, brick, and other materials were included. To correct for amorphous content and unidentified phases, an internal standard was added to the field samples, which were treated like laboratory samples. Rietveld refinement was successfully used for quantification of RCS in laboratory and field samples. The method showed comparable results to the NIOSH 7500 method for quartz and remained linear for laboratory samples up to 20 mg. The lowest quantified amounts of quartz in the laboratory samples were 5 µg. The two methods yielded similar results for RCS in field samples with a total mass of up to 15 mg and a quartz content of 1.8 wt% to 11 wt%. A total sample mass of above 0.5 mg was required for optimal quantification of crystalline phases by Rietveld refinement. The method proved useful in determining RCS and other crystalline components in field samples and corrected for interferences even with a complex matrix and high mass loading. pubtype: Academic Journal doctype: CEU research tables/charts Journal Article ougenre: Unknown language: English refInfo: holdings: @attributes: islocal: N |
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