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Determination of ethylene glycol in alkali wastewater by gas chromatography/mass spectrometry  

Park, Gyo-Beom (Chemical Analysis Laboratory, Korea Research Institute of Chemical Technology)
Lee, Sueg-Geun (Chemical Analysis Laboratory, Korea Research Institute of Chemical Technology)
Publication Information
Analytical Science and Technology / v.17, no.6, 2004 , pp. 527-531 More about this Journal
Abstract
Treatment with aqueous sodium hydroxide solution plays an important role to impart certain desirable properties - feel and luster on the surface of polyester fiber. In this process alkali wastewater contains disodium terephthalate, ethylene glycol (EG) and residual sodium hydroxide. In this paper we report a new method containing the pretreatments of derivatization with benzoyl chloride and solvent extraction using pentane. The calibration curve of EG determined by GC/MS-SIM shows a good linearity in the range of 0.1 to $25{\mu}g/mL$ having the standard deviation of ${\leq}8.7%$. The recovery and the detection limit of this method are 91.9-93.7% and $0.05{\mu}g/mL$ respectively.
Keywords
Ethylene glycol; GC/MS; Benzoy1 chloride;
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