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Determination of residual glycol ethers in leather and leather products by gas chromatography /mass spectrometry
  • Determination of residual glycol ethers in leather and leather products by gas chromatography /mass spectrometry

Determination of residual glycol ethers in leather and leather products by gas chromatography /mass spectrometry

Details
Abstract: An effective method w as established for the simultaneous determination of residual glycol ethers in leather and leather products by gas chromatography /mass spectrometry. Glycol ethers in leather and leather products w ere ultrasonically extracted at 45 ℃,using ethyl acetate as the extraction solvent. The extracts w ere purified by solid phase extraction ( SPE) columns,and then analyzed by gas chromatography /mass spectrometry in  choose ion monitoring mode.The content of each analyte w as calibrated by external standard method. The limit of detection of ethylene glycol ethyl ether ( EGEE) w as 0. 10 mg /kg under the condition of signal to noise ( S /N) of 3 and the limits of the other 11 glycol ethers w ere all less than 0. 05 mg /kg. The
spiked recoveries varied from 81. 2% to 95. 5% at three different spiked levels w ith the relative standard deviations ( RSDs) ranged from 1. 4% to 6. 6%. The proposed method is simple,rapid and accurate,w ith the limits of detection much less than the requirements of the Regulation Concerning Registration Evaluation,Authorization and Restriction of Chemicals ( REACH) of European Union. It is applicable to the determination of residual glycol ethers in leather and leather products,and provides a reference for the relevant testing standards.