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KMID : 0385520040170060527
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Analytical Science & Technology
2004 Volume.17 No. 6 p.527 ~ p.531
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Determination of ethylene glycol in alkali wastewater by gas chromatography/mass spectrometry
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박교범/Park GB
이석근/Lee SG
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Abstract
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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 ㎍/mL having the standard deviation of ≤8.7 %. The recovery and the detection limit of this method are 91.9-93.7% and 0.05 ㎍/mL respectively.
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