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.
Similar content being viewed by others
References
Kirk, Othmer (1979) In: Grayson M (ed) Encyclopedia of chemical technology, 3rd ed. Wiley, New York
Coates J, Reber S (1992) Amer Lab 24:C20
Jordan J-R (1992) Amer Lab 24:P20–20
Verbies Y, Fevre B, Andre A (1993) Analusis 21:M29-M30
Pickuth A (1993) Spectroscopy 11:79–85
Ruzicka J, Hansen E-H (1988) Flow injection analysis, 2nd ed. Wiley, New York
Valcárcel M, Luque de Castro M-D (1987) Flow injection analysis. Principles and applications. Horwood, Chichester
Curran D-J, Collier W-G (1985) Anal Chim Acta 177:259–262
Guzmán M, Ruzicka J, Christian G-D, Shelley P (1991) J Vibr Spectrosc 2:1–14
Garrigues S, Gallignani M, de la Guardia M (1993) Talanta 40:1799–1807
Gallignani M, Garrigues S, de la Guardia M (1994) Analyst 119:653–657
Rosenberg E, Kellner R (1994) Fresenius J Anal Chem 348:530–532
Garrigues S, Gallignani M, de la Guardia M (1993) Anal Chim Acta 281:259–264
Gallignani M, Garrigues S, de la Guardia M (1994) Anal Chim Acta (in press)
López-Anreus E, Garrigues S, de la Guardia M (1994) Anal Chim Acta (in press)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
López-Anreus, E., Garrigues, S. & de la Guardia, M. Flow injection near-infrared determination of ethanol in chloroform. Fresenius J Anal Chem 351, 724–728 (1995). https://doi.org/10.1007/BF00323626
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00323626