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Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
44, Number 7, August 2006, pp.444-450
The Extraction and Analysis of 1,4-Dioxane from
Water Using Solid-Phase Microextraction Coupled with Gas Chromatography
and Gas Chromatography–Mass Spectrometry
Robert E. Shirey and Christopher M. Linton
Supelco, Inc., Bellefonte, PA 16823
In this study,
two methods are developed for the extraction of 1,4-dioxane (dioxane)
from water using 80-µm carboxen–polydimethylsiloxane
solid-phase microextraction fibers followed by either gas chromatography
(GC)–flame ionization detection (FID) or GC–mass spectrometry
(MS). With GC–FID, the lower limit of detection (LOD) for
1,4-dioxane is 2.5 µg/L (ppb) with a linear range of 5 to
10,000 µg/L, obtained by immersing the fiber in the sample
for 20 min with agitation. Using GC–MS, the lower limit
of quantitation is 0.5 µg/L, and the LOD is 0.25 µg/L.
The upper linear range limit is 100 µg/L. Samples are extracted
in 20 min using either heated headspace with agitation or direct
immersion with agitation.
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