Fresenius' Journal of Analytical Chemistry

, Volume 351, Issue 8, pp 724–728

Flow injection near-infrared determination of ethanol in chloroform

Authors

  • Emilio López-Anreus
    • Department of Analytical ChemistryUniversity of Valencia
  • Salvador Garrigues
    • Department of Analytical ChemistryUniversity of Valencia
  • Migue de la Guardia
    • Department of Analytical ChemistryUniversity of Valencia
Original Papers Organic Chemistry/Materials

DOI: 10.1007/BF00323626

Cite this article as:
López-Anreus, E., Garrigues, S. & de la Guardia, M. Fresenius J Anal Chem (1995) 351: 724. doi:10.1007/BF00323626

Abstract

A simple and direct flow injection (FIA) procedure has been developed for the determination of the stabilizing agent ethanol in chloroform samples. The procedure is based on the use of the absorbance band of ethanol in the near-infrared (NIR) region at 2272 nm, measured in front of a reference sample of chloroform stabilized with amylene. The method developed provides a limit of detection of 0.0045% (v/v) and a dynamic range until 10% (v/v) with a typical variation coefficient of 0.4% for six independent analysis of a real sample containing approximately 1% (v/v) of ethanol. The sample injection frequency allowed by the method is 78 h−1.

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© Springer-Verlag 1995