Report of Investigations 9359: A Mass Spectrometer Method for Determining Helium in the Parts-Per-Million to 10-Percent Range

Details

• Journal Article:
  City, ST: U.S. Department of the Interior, Bureau of Mines, RI 9359
• Personal Author:
  Holland, Philip W.
• Description:
  The U.S. Bureau of Mines has developed a mass spectrometer method for determining helium in the parts-per-million to 10-pct range to an accuracy of +/-1 pct. The method employs a mass spectrometer, an inlet system utilizing a chromatographic gas-sampling valve, and an activated coconut charcoal trap cooled with liquid nitrogen. Gravimetrically prepared standards of helium in nitrogen were used to demonstrate the linearity of the method over the concentration range of 10 ppm to 10.66 pct helium. [Description provided by NIOSH]
• Subjects:
  Chemistry Helium Occupational Health Safety
• Keywords:
  Helium-isotopes; Mass-spectrometers; Numerical-analysis; Standards; Helium-4; Mass-spectroscopy; Chemical-analysis
• Source:
  Amarillo, TX: U.S. Department of the Interior, Bureau of Mines, RI 9359, 1991 Jan; :1-15
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 6 ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HEFO - Helium Field Office
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  14 pdf pages
• NIOSHTIC Number:
  nn:10009096
• NTIS Accession Number:
  PB91-225110
• Federal Fiscal Year:
  1991
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f7094e72e587caae0b49b221abe82eb558e1899072c0e8b533b9db26d6588bb0cfb2367a5e66391875512361dd905bda0fa5ed92af021d9eccae84abdd544c73
• Download URL:
  https://stacks.cdc.gov/view/cdc/10040/cdc_10040_DS1.pdf
• File Type:
  [PDF - 742.84 KB ]