A method was established for qualitative and quantitative analysis on direct coal liquefaction cycled solvent(CDLRS) by comprehensive two dimensional gas chromatography time of flight mass spectrometry with hydrogen flame ionization detector(GC×GC-TOF MS/FID).The data was acquired simultaneously by TOF MS and FID detector.The acquired data by GC×GC-TOF MS were qualified based on NIST library search

standard material retention value comparison

spectral analysis

standard mass spectrum comparison

two dimensional spectral features and extracting compound molecular ions

and then divided into 18 categories based on z value.Afterwards

the Chroma TOF 47 was used to apply the qualitative classification results of TOF MS to the FID detection data

and the data collected by TOF MS and FID were normalized by the chromatographic peak area to realize semi quantitative analysis of CDLRS.The quantitative results of GC×GC/FID showed that saturated hydrocarbons and aromatic hydrocarbons in the CDLRS accounted for 45.805% and 53.938%

respectively.The saturated hydrocarbons were mainly dicycloalkanes and tricycloalkanes

which contents were 14.644% and 18.021%

respectively.The aromatic hydrocarbons were mainly cycloalkylbenzenes and dinaphthenebenzenes

which accounted for 19.759% and 16.528%

respectively.This method provided an effective analytical means for the qualitative and quantitative analyses of CDLRS.