Unbiased estimates of coefficients of variation for asbestos counting determined from Johns-Manville data.

Details

• Personal Author:
  Busch, Kenneth A. ; Hornung, Richard W. ; Leidel, Nelson A. ; Smith RJ
• Description:
  A statistical model for determining the relationship between the coefficient of variation (CV) and total fiber count of asbestos (1332214) fibers is described. The model is applied to data from 109 asbestos fiber measurements. The CV declines with increasing average total fibers counted and is related to fiber density. The NIOSH recommended asbestos sampling and counting procedure provides fiber concentration estimates within about 23 percent of the true concentration 95 percent of the time. The authors suggest that samples should be collected for as long as necessary to obtain sufficient surface fiber density on the filter; the average number of fibers per field counted should be close to 1. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Air Pollution, Indoor Asbestos Dust Environmental Monitoring Minerals Occupational Health Particulate Matter Safety
• Keywords:
  Fibrous-bodies; Estimating; Mathematical-models; Air-contamination; Air-sampling; Asbestos-dust; Fibrous-dusts; Minerals; Measurement-methods; Analytical-methods
• ISBN:
  0930376080
• Publisher:
  Pathofox Publisher, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  District of Columbia ; Illinois ; OSHA Region 3 ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OECSP - Office of Extramural Coordination and Special Projects ; DTS - Division of Technical Services
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  185-197
• NIOSHTIC Number:
  nn:00096291
• Citation:
  Dusts and Disease, Proceedings of the Conference on Occupational Exposures to Fibrous and Particulate Dust and their Extension into the Environment, Sponsored by the Society for Occupational and Environmental Health and U.S. Mine Safety and Health Administration; R. Lemen, and J. M. Dement, editors, Park Forest South, Illinois, Pathofox Publisher, Inc. 1979 Jan; :185-197
• CAS Registry Number:
  Asbestos (CAS RN 1332-21-4)
• Editor(s):
  Lemen R; Dement JM
• Federal Fiscal Year:
  1979
• Peer Reviewed:
  False
• Source Full Name:
  Dusts and Disease, Proceedings of the Conference on Occupational Exposures to Fibrous and Particulate Dust and their Extension into the Environment, Sponsored by the Society for Occupational and Environmental Health and U.S. Mine Safety and Health Administration; R. Lemen, and J. M. Dement, editors, Park Forest South, Illinois, Pathofox Publisher, Inc.
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/241087/cdc_241087_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]