Increasing Flame Ionization Detector Response by Silylation: The Effective Carbon Number of Carboxylic Acids

Authors

  • Judit Mátyási
    Affiliation
    Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
    B&B Analytics Ltd., Terasz utca 60., H-2030 Érd, Hungary
  • Gyula Nyerges
    Affiliation
    Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
  • József Balla
    Affiliation
    Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
    B&B Analytics Ltd., Terasz utca 60., H-2030 Érd, Hungary
https://doi.org/10.3311/PPch.22827

Abstract

Detector response of carboxylic acids (C2–C12, straight and branched chain) were investigated using a flame ionization detector (FID) in a capillary gas chromatographic system. The response of the FID for hydrocarbons is almost directly proportional to the carbon quantity introduced into the flame. Heteroatoms in the molecule reduce signal magnitude, depending on their quality and on the bond they are involved in. We expressed this reduced response with the effective carbon number (ECN). We determined the ECN contribution (ΔECN) of the carboxyl group on the alkyl skeleton. We examined how the responses of carboxylic acids change if trimethylsilyl derivatives are evaluated and we compared the ECN of the neat and derivatized form.

Keywords:

carboxylic acids, silylated derivatives, effective carbon number, flame ionization detector

Citation data from Crossref and Scopus

Published Online

2023-09-25

How to Cite

Mátyási, J., Nyerges, G., Balla, J. “Increasing Flame Ionization Detector Response by Silylation: The Effective Carbon Number of Carboxylic Acids”, Periodica Polytechnica Chemical Engineering, 67(4), pp. 565–572, 2023. https://doi.org/10.3311/PPch.22827

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Articles