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Thermal decomposition of immobilized compounds for the generation of gaseous standard mixtures containing ammonia and amines

Abstract

The thermal decomposition of phthalamic acid derivatives chemically bonded to the surface of silica gel was examined and utilized for the generation of single-component gaseous standard mixtures of ammonia, methylamine, diethylamine and triethylamine. The conditions of the thermal decomposition (temperature, time, diluent gas flow rate) were optimized to ensure complete liberation and rapid elution of the compounds from the bed of modified silica gel. The total amounts of these four compounds that can be released from unit mass of the modified silica gel are in the range of several mg.

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Konieczka, P., Prokopowicz, M., Skwierawska, A. et al. Thermal decomposition of immobilized compounds for the generation of gaseous standard mixtures containing ammonia and amines. Mikrochim Acta 127, 211–217 (1997). https://doi.org/10.1007/BF01242724

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  • DOI: https://doi.org/10.1007/BF01242724

Key words

  • standard gas mixtures
  • calibration
  • silica gel
  • ammonia
  • amines