Evaluation of Laser-Induced Breakdown Spectroscopy (LIBS) for Measurement of Silica on Filter Samples of Coal Dust

Details

• Personal Author:
  Brown J ; Cauda, Emanuele G. ; Guevara E ; Miller AL ; Stipe, Christopher B.
• Description:
  Airborne silica dust (quartz) is common in coal mines and represents a respiratory hazard that can lead to silicosis, a potentially fatal lung disease. With an eye toward developing a portable monitoring device for rapid analysis of silica dust, laser-induced breakdown spectroscopy (LIBS) was used to quantify quartz in coal dust samples collected on filter media. Pure silica [Min-U-Sil(TM) 5], Georgia kaolin, and Pittsburgh-4 and Illinois-6 coal dusts were deposited separately and at multiple mass loadings onto 37-mm polyvinylchloride (PVC) filters. LIBS-generated silicon emission was monitored at 288.16 nm, and non-silica contributions to that signal from kaolinite were removed by simultaneously detecting aluminum. Measurements of the four samples were used to calculate limits of detection (LOD) for silicon and aluminum of approximately 0.08 µg/cm2 and 0.05 µg/cm2, respectively (corresponding to 0.16 µg/cm2 and 0.20 µg/cm 2 for silica and kaolinite, respectively). Relative errors of prediction are around 10%. Results demonstrate that LIBS can dependably quantify silica on filter samples of coal dust and confirm that accurate quantification can be achieved for very lightly loaded samples, which supports the potential application of LIBS for rapid, in-field monitoring. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Aluminum Compounds Coal Dust Irritants Occupational Health Particulate Matter Quartz Safety Silicon Compounds Silicon Dioxide Spectrum Analysis

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• Keywords:
  Airborne-dusts Airborne-particles Aluminum-compounds Author Keywords: Laser-induced Breakdown Spectroscopy Coal-dust Coal Dust Filter LIBS Measurement-equipment Monitoring-systems Monitors Quartz-dust Respiratory-irritants Sampling Sampling-equipment Silica Silica-dusts Silicon Silicon-compounds Silicosis Spectrographic-analysis Spectroscopes

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• Series:
  Mining Publications
• ISSN:
  0003-7028
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; OSHA Region 3 ; Pennsylvania ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  66
• Issue:
  11
• NIOSHTIC Number:
  nn:20041847
• Citation:
  Appl Spectrosc 2012 Nov; 66(11):1286-1293
• Contact Point Address:
  Christopher B. Stipe, Department of Mechanical Engineering, Seattle University, Seattle, WA 98122 USA
• Email:
  stipec@seattleu.edu
• CAS Registry Number:
  Kaolinite (Al2(OH)4(Si2O5)) (CAS RN 1318-74-7) ; Quartz (SiO2) (CAS RN 14808-60-7) ; Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  2013
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Applied Spectroscopy
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f488e2cee3ddf4b34636b8f50d86c9dd578c94cd8f678f65127521a3f398492d3b29fe605a4e965ded4588beedf753b75b8bed0fcc4ed779087cce890c99d647
• Download URL:
  https://stacks.cdc.gov/view/cdc/227476/cdc_227476_DS1.pdf
• File Type:
  [PDF - 663.59 KB ]