The Use of Reverse Diffusion to Validate the Performance of Diffusive Samplers

Details

• Personal Author:
  Schweder M ; Underhill D
• Description:
  A number of different protocols have been put forth for measuring reverse diffusion from diffusive samplers. The basic concept is that reverse diffusion tests, depending as they do on basic laws of mass transfer, are not independent of one another, but may give general information about the limits to the possible change that can occur if the conditions to measure reverse diffusion are changed. Laboratory measurements of the reverse diffusion of vinyl chloride, using 3M and SKC diffusive samplers, following both the National Institute for Occupational Safety and Health (NIOSH) and the European Union test protocols, support the mathematical analysis developed in this article. An important conclusion is that if in following the NIOSH protocol a diffusive sampler loses 10% of its analyte over a period of 4 hours, then the maximum loss expected from a sampler allowed to back-diffuse for 8 hours is 19%. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety Vinyl Chloride
• Keywords:
  Author Keywords: Diffusive Sampling Diffusion Analysis Mathematical Models NIOSH Reverse Diffusion Samplers Sampling Equipment Sampling Error Validation Vinyl Chloride
• ISSN:
  0002-8894
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 4 ; South Carolina
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  62
• Issue:
  6
• NIOSHTIC Number:
  nn:20057765
• Citation:
  Am Ind Hyg Assoc J 2001 Nov/Dec; 62(6):680-684
• Contact Point Address:
  Dwight Underhill, School of Public Health, University of South Carolina, 800 Sumter St., Columbia, SC 29218
• CAS Registry Number:
  Vinyl chloride (CAS RN 75-01-4)
• Federal Fiscal Year:
  2002
• Performing Organization:
  Arnold School of Public Health, University of South Carolina, Columbia
• Peer Reviewed:
  True
• Start Date:
  19940701
• Source Full Name:
  American Industrial Hygiene Association Journal
• End Date:
  20040630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:be5b72c0f07187c670ece5adcb80f2bc1fd4e8a0ba6bb40ea0c941dfbca648beccb9e59d00fc88c8493395fa6ec67469419c6446ed3cb9aa0fd8438d71363f9a
• Download URL:
  https://stacks.cdc.gov/view/cdc/214999/cdc_214999_DS1.pdf
• File Type:
  [PDF - 291.57 KB ]