Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
39, Number 2, February 2001, pp. 73-76
Gas
Chromatographic Determination of 1,4-Dioxane at Low Parts-Per-Million Levels
in Glycols
M.D.
Pundlik*, B. Sitharaman, and Inderjit Kaur
Toshniwal Instruments (India) Limited, D-96, M.I.D.C., ‘C’ Road, Satpur,
Nasik – 422 007, India
1,4-Dioxane
is a flammable liquid and tends to form explosive peroxides. Its formation in
glycols (low parts-per-million levels), which are used as dehumidifying agents
in refineries, may take place by condensation. 1,4-Dioxane thus formed gets
distilled over with benzene in the refinery process. Therefore, it is necessary
to identify and determine the levels of 1,4-dioxane in glycols as well as benzene.
Gas chromatography (GC) is probably the best technique for this purpose. GC
analysis may be carried out using a flame ionization detector. Results show
that 1,4-dioxane can be comfortably determined down to 2 ppm in glycols and
benzene.
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