Review of Filters for Air Sampling and Chemical Analysis in Mining Workplaces

Details

• Personal Author:
  Abbasi B ; Chow JC ; Parks D ; Reed, William R. ; Wang X ; Watson JG
• Description:
  This review considers the use of filters to sample air in mining workplace environments for dust concentration measurement and subsequent analysis of hazardous contaminants, especially respirable crystalline silica (RCS) on filters compatible with wearable personal dust monitors (PDM). The review summarizes filter vendors, sizes, costs, chemical and physical properties, and information available on filter modeling, laboratory testing, and field performance. Filter media testing and selection should consider the characteristics required for mass by gravimetry in addition to RCS quantification by Fourier-transform infrared (FTIR) or Raman spectroscopic analysis. For mass determination, the filters need to have high filtration efficiency (≥99% for the most penetrable particle sizes) and a reasonable pressure drop (up to 16.7 kPa) to accommodate high dust loading. Additional requirements include: negligible uptake of water vapor and gaseous volatile compounds; adequate particle adhesion as a function of particle loading; sufficient particle loading capacity to form a stable particle deposit layer during sampling in wet and dusty environments; mechanical strength to withstand vibrations and pressure drops across the filter; and appropriate filter mass compatible with the tapered element oscillating microbalance. FTIR and Raman measurements require filters to be free of spectral interference. Furthermore, because the irradiated area does not completely cover the sample deposit, particles should be uniformly deposited on the filter. [Description provided by NIOSH]
• Subjects:
  Chemistry Dust Environmental Monitoring Mining Occupational Health Safety Silicon Dioxide
• Keywords:
  Air Filters Air Sampling Author Keywords: Filter Chemical Analysis Chemical Speciation Coal Dust Crystalline Silica Dust Sampling Filter Materials FTIR Mining Industry Personal Dust Monitor Raman Respirable Coal Mine Dust Respirable Crystalline Silica Respirable Dust

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• Series:
  Mining Publications
• ISSN:
  2075-163X
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Nevada ; OSHA Region 10 ; OSHA Region 3 ; OSHA Region 9 ; Pennsylvania ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OD - Office of the Director ; SMRD - Spokane Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  12
• Issue:
  10
• NIOSHTIC Number:
  nn:20066238
• Citation:
  Minerals 2022 Oct; 12(10):1314
• Contact Point Address:
  Judith C. Chow, Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89511, USA
• Email:
  judith.chow@dri.edu
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Construction ; Mining
• Peer Reviewed:
  True
• Source Full Name:
  Minerals
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:458aeb5cfd8b962e6f98aabc0d82707a83a21e362da972579fabd4e1cdffd05f62303f542e82432f1787cfbf4318939c536a4f297458d5c450f6ecffac22fb4b
• Download URL:
  https://stacks.cdc.gov/view/cdc/215576/cdc_215576_DS1.pdf
• File Type:
  [PDF - 2.52 MB ]