Preliminary Sampling Methodology and Analytical Procedures for Ambient Sulfur Hexafluoride,

Abstract

A preliminary evaluation of techniques of sampling and gas chromatographic analysis for low levels of sulfur hexafluoride was conducted to determine the most feasible method for available equipment. Using a Tracor MT-150 gas chromatograph equipped with Nickel 63 electron capture detector and polarized dc voltable, it was possible to detect sulfur hexafluoride at a concentration of 0.06 ppb with a 5A molecular sieve column and nitrogen carrier gas, without preconcentration of the sample. Also, a comparison of glass and Saran sampling materials proved that no detectable loss of the tracer gas resulted with the Saran bags (between 6 ppm and 0.06 ppb SF6 concentration) whereas considerable loss of SF6 in the low concentration range (6 ppb) occurs possibly from adsorption by the glassware. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0759131

Entities

People

  • Susan K. Luckan
  • William Cooper

Tags

DTIC Thesaurus Topics

  • Adsorption
  • Chromatographic Analysis
  • Chromatographs
  • Detectors
  • Electron Capture
  • Electrons
  • Materials
  • Materials Testing
  • Molecular Sieves
  • Nitrogen
  • Sampling
  • Test And Evaluation
  • Test Methods

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Environmental Engineering
  • Radar Systems Engineering.

Technology Areas

  • Microelectronics