Quantitative Analysis of the TWT Cathode Impregnants Using Flame Emission Spectroscopy.

Abstract

Flame emission spectroscopy (FES) is demonstrated for the determination of barium, calcium, and aluminum concentrations in barium calcium aluminate dispenser cathode impregnants. The procedure consists of dissolving the impregnant in 0.5M to 2M hydrochloric acid and analyzing the solution for all three metals by means of a nitrous oxide/acetylene flame. No significant interferences were observed on the basis of the analysis of barium, calcium, and aluminum solution mixtures of known concentration. The barium, calcium, and aluminum analyses were accurate to + or - 1.1%, + or - 1.8%, respectively. The method was used to analyze a large number of cathode impregnants. On the basis of these data, significant variations in composition were observed during the processing. Thus, FES is sufficiently sensitive and accurate to detect impregnant compositional variations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 1987
Accession Number
ADA176293

Entities

People

  • Russell A. Lipeles

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acetylenes
  • Alkynes
  • Aluminates
  • Aluminum
  • Chemical Kinetics
  • Chemistry
  • Elements
  • Emission
  • Emission Spectroscopy
  • Impregnation
  • Metals
  • Mixing
  • Physics Laboratories
  • Security
  • Space Systems
  • Spectroscopy

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Surface Engineering/Surface Coating Technology.