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

GC/MS를 이용한 알칼리 폐수 중 ethylene glycol 정량

  • Park, Gyo-Beom (Chemical Analysis Laboratory, Korea Research Institute of Chemical Technology) ;
  • Lee, Sueg-Geun (Chemical Analysis Laboratory, Korea Research Institute of Chemical Technology)
  • Received : 2004.07.27
  • Accepted : 2004.08.20
  • Published : 2004.12.25

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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