A comparison of two methods for the determination of toluene diisocyanate in air.

Details

• Personal Author:
  McCammon, Charles S. ; Momberg HE
• Description:
  A Miniature Continuous Monitor (MCM) system is compared in the laboratory with the Marcali method, which uses the Beckman Model B Spectrophotometer, for accuracy, reproducibility, reliability and ease of use in detecting toluene diisocyanate (TDI) concentration levels within the NIOSH exposure limits. Poor results initially obtained with the MCM are considered likely to have been caused by large erratic variations in pump flow, non-uniformity of the paper tape, errors in reading the tapes, experimental errors in sampling and variability of the results obtained with the analytical method used to establish the TDI concentration. Later results show that the MCM system gives good personal sampling data compared to the Marcali method, with a major advantage of giving a graphical record of a worker's exposure profile over an entire eight hour period. It is also less awkward to use. Interference by primary aromatic amines is not evaluated. [Description provided by NIOSH]
• Content Notes:
  in NTRL, no pdf
• Subjects:
  Environmental Monitoring Hazardous Substances Isocyanates Occupational Health Polycyclic Aromatic Hydrocarbons Safety Toluene
• Keywords:
  NIOSH-Author; Personal-exposure-detectors; Toxic-substances; Air-quality-measurement; Air-sampling-equipment; Continuous-air-monitoring; Evaluation; Aromatic-hydrocarbons; Analytical-methods; Analytical-instrumentation; Detection; Cyanates; Isocyanates; Toluenes
• Series:
  NIOSH Numbered Publications
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DLCD - Division of Laboratories and Criteria Development
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-38
• NIOSHTIC Number:
  nn:00057173
• NTIS Accession Number:
  PB83176743
• Citation:
  Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHEW (NIOSH) Publication No. 76-168, 1976 Jun; :1-38
• CAS Registry Number:
  Benzene, diisocyanatomethyl- (CAS RN 1321-38-6) ; Toluene diisocyanate (CAS RN Toluene diisocyanate (CAS RN 26471-62-5))
• Federal Fiscal Year:
  1976
• Peer Reviewed:
  False
• Source Full Name:
  National Institute for Occupational Safety and Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/236823/cdc_236823_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]