Alternative Filters for Crystalline Silica Analysis

Details

• Personal Author:
  Archibald M ; Key-Schwartz, Rosa J. ; Ramsey D
• Description:
  X-ray diffraction analysis of crystalline silica is currently accomplished by deposition of the sample onto silver membrane filters. An alternative type of filter has been investigated for use in X-ray diffraction analysis. A thin layer of silver was evaporatively coated onto polypropylene and nylon capillary pore filters. Scanning electron microscopy of the coated filters indicated that the filtration characteristics of the substrate filters were not changed significantly by the deposition of the thin silver layer on the surface. Coated capillary pore filters may enable an improvement in sensitivity for crystalline silica analysis over that seen with the use of conventional silver "tortuous pore" membrane filters. Polypropylene and nylon were chosen from several filter substrate materials due to their smooth surface, their chemical resistance to tetrahydrofuran, and their availability in the required 0.45 um pore size. [Description provided by NIOSH]
• Subjects:
  Occupational Health Radiography Safety Silicon Dioxide
• Keywords:
  Filter-materials Filter-membranes Filters Membrane-filters Microscopy Sampling-equipment Silica-dusts X-ray-analysis
• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  California ; North Carolina ; Ohio ; OSHA Region 4 ; OSHA Region 5 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  87
• NIOSHTIC Number:
  nn:20022500
• Citation:
  American Industrial Hygiene Conference and Exposition, June 1-6, 2002, San Diego, California. Fairfax, VA: American Industrial Hygiene Association, 2002 Jun; :87
• 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:
  False
• Source Full Name:
  American Industrial Hygiene Conference and Exposition, June 1-6, 2002, San Diego, California
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9f4c54493909db57cf33dbacec9690d2c03689557ca8c36b7517ca351140b00683d4d540eabed83b61e3e80a005fdae3ea54894bcc6575144890ccd5882c81b4
• Download URL:
  https://stacks.cdc.gov/view/cdc/199255/cdc_199255_DS1.pdf
• File Type:
  [PDF - 481.42 KB ]