LI Yan, DING Ke-ying, NING Wen-ji. Determination of 86 volatile organic compounds in drinking water using purge and trap in combination with gas chromatography-mass spectrometry[J]. Journal of Environmental and Occupational Medicine, 2017, 34(4): 341-349. DOI: 10.13213/j.cnki.jeom.2017.16723
Citation: LI Yan, DING Ke-ying, NING Wen-ji. Determination of 86 volatile organic compounds in drinking water using purge and trap in combination with gas chromatography-mass spectrometry[J]. Journal of Environmental and Occupational Medicine, 2017, 34(4): 341-349. DOI: 10.13213/j.cnki.jeom.2017.16723

Determination of 86 volatile organic compounds in drinking water using purge and trap in combination with gas chromatography-mass spectrometry

  • Objective To establish a method for determination of 86 volatile organic compounds in drinking water.

    Methods By optimizing purge and trap conditions (purge temperature, purge time, and desorption time) and gas chromatographymass spectrometry conditions (qualitative and quantitative ion selection), as well as using selected ion monitoring mode and internal standard method, a method of purge and trap in combination with gas chromatography-mass spectrometry was established for rapid determination of 86 volatile organic compounds including difluorodichloromethane, chloromethane, and vinylchloride.

    Results The studied 86 volatile organic compounds were well separated, with the detection limits of the method between 0.03-0.1 μg/L, the average recovery rates between 75.1%-114%, and the relative standard deviations between 0.33%-12.3%.

    Conclusion The proposed method is featured by high throughput, sensitivity, precision, accuracy, and convenience, and short analytical cycle; therefore, it is suitable for simultaneous determination of various volatile organic compounds in drinking water.

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