Direct-on-Filter Analysis of Crystalline Silica Using Photoacoustic Fourier Transform-Infared Spectroscopy

Details

• Personal Author:
  Chen BT ; Orr C ; Schwerha, Diana J. ; Soderholm, Sidney C.
• Description:
  Photoacoustic Fourier transform-infrared spectroscopy (PA-FT-IR) has been used to perform direct-on-filter (DOF) analysis of crystalline silica using laboratory-generated filter samples. With these samples, the silica particles were embedded in the stable three-dimensional matrix of the filter. In this preliminary study, it was demonstrated that the photoacoustic (PA) signals generated from direct-on-filter measurements were significantly higher than the corresponding signals for equivalent amounts of silica particles placed directly in the photoacoustic detector cup. Studies with Min-U-Sil-5 loaded onto 9 mm filter stubs indicated a limit of detection of less than 10 g. Additionally, Teflon filters were demonstrated to be more suitable for these measurements than other types. The photoacoustic FT-IR approach seems to be feasible for further development to use with full-sized [Description provided by NIOSH]
• Subjects:
  Aluminum Silicates Occupational Health Safety Silicon Dioxide Spectrum Analysis
• Keywords:
  Samplers Sampling-methods Silica-dusts Silicates Spectrographic-analysis Spectroscopes
• ISSN:
  0003-2670
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  257-264
• Volume:
  457
• Issue:
  2
• NIOSHTIC Number:
  nn:20022854
• Citation:
  Anal Chim Acta 2002 Apr; 457(2):257-264
• Email:
  corr@cdc.gov
• CAS Registry Number:
  Quartz (SiO2) (CAS RN 14808-60-7)
• Federal Fiscal Year:
  2002
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Peer Reviewed:
  True
• Source Full Name:
  Analytica Chimica Acta
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7719afde50ed7b9421d62074e28cfe9e8cc5ec840b419b383b4e1cca33290bd3fc412269414e8e3bf1185124bd6649d66ce3f05562ba8df357d01cada5042717
• Download URL:
  https://stacks.cdc.gov/view/cdc/199485/cdc_199485_DS1.pdf
• File Type:
  [PDF - 118.49 KB ]