Abstract：The operation of traditional identification method of lignite is complicated. Moreover, the qualitative results are greatly affected by the subjective factors. The identification and detection method of lignite by gas chromatography/triple quadrupole mass spectrometry (GC-MS/MS) was explored and established. The lignite sample was extracted with acetone solution. The extracting solution was collected and analyzed by full scanning total ion flow chromatography, selective ion scanning and multi-reaction monitoring scanning mass spectrometry (chromatography and mass spectrometry) using GC-MS/MS. The characteristic peaks of lignite were detected from total ion flow chromatorgraphy. According to the mass-to-charge ratios of characteristic peaks, i.e., 394.8/187, 394.8/95, 394.8/161 and 394.8/159.1, the lignite samples were analyzed at multi-reaction monitoring (MRM) mode to make the qualitative results more accurate and reliable. The proposed method could be widely used for the qualitative detection and identification of lignite from other types of coals.
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