Comparison of Field Portable Measurements of Ultrafine TiO2: X-Ray Fluorescence, Laser-Induced Breakdown Spectroscopy, and Fourier-Transform Infrared Spectroscopy

Details

• Personal Author:
  Brown J ; LeBouf, Ryan F. ; Miller AL ; Murphy N ; Stefaniak, Aleksandr B. ; Stipe C
• Description:
  Laboratory measurements of ultrafine titanium dioxide (TiO2) particulate matter loaded on filters were made using three field portable methods (X-ray fluorescence (XRF), laser-induced breakdown spectroscopy (LIBS), and Fourier-transform infrared (FTIR) spectroscopy) to assess their potential for determining end-of-shift exposure. Ultrafine TiO2 particles were aerosolized and collected onto 37 mm polycarbonate track-etched (PCTE) filters in the range of 3 to 578 mg titanium (Ti). Limit of detection (LOD), limit of quantification (LOQ), and calibration fit were determined for each measurement method. The LOD's were 11.8, 0.032, and 108 mg Ti per filter, for XRF, LIBS, and FTIR, respectively and the LOQ's were 39.2, 0.11, and 361 mg Ti per filter, respectively. The XRF calibration curve was linear over the widest dynamic range, up to the maximum loading tested (578 mg Ti per filter). LIBS was more sensitive but, due to the sample preparation method, the highest loaded filter measurable was 252 mg Ti per filter. XRF and LIBS had good predictability measured by regressing the predicted mass to the gravimetric mass on the filter. XRF and LIBS produced overestimations of 4% and 2%, respectively, with coefficients of determination (R2) of 0.995 and 0.998. FTIR measurements were less dependable due to interference from the PCTE filter media and overestimated mass by 2% with an R2 of 0.831. [Description provided by NIOSH]
• Subjects:
  Aerosols Laboratories Occupational Health Particulate Matter Radiography Safety
• Keywords:
  Aerosol-particles Analytical-processes Exposure-levels Filters Measurement-equipment Nanotechnology Particulates X-ray-fluorescence-analysis
• Series:
  Mining Publications
• ISSN:
  2050-7887
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; OSHA Region 3 ; Washington ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRDS - Division of Respiratory Disease Studies ; OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  15
• Issue:
  6
• NIOSHTIC Number:
  nn:20042702
• Citation:
  Environ Sci Process Impacts 2013 Jun; 15(6):1191-1198
• Contact Point Address:
  Ryan F. LeBouf, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV, 26505
• Email:
  rlebouf@cdc.gov
• CAS Registry Number:
  Titania (CAS RN 13463-67-7) ; Titanium (CAS RN 7440-32-6)
• Federal Fiscal Year:
  2013
• NORA Priority Area:
  Healthcare and Social Assistance
• Peer Reviewed:
  True
• Source Full Name:
  Environmental Science: Processes & Impacts
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d433037776537acbb03e22bdf712728da8d8b1996bf61bffb861c8fcb365b6982ebf4e37e19da671e57d60e05d05cf3481a8e20e639597d1aeee928536d94c0c
• Download URL:
  https://stacks.cdc.gov/view/cdc/227987/cdc_227987_DS1.pdf
• File Type:
  [PDF - 584.19 KB ]