The coal liquefaction oil was separated using gradient elution method and the aromatics were analyzed by gas chromatography and mass spectrometry ( GCMS) and1Hnuclear magnetic resonance ( 1HNMR). 采用梯度洗脱技术对煤液化油进行了分离,并对芳烃部分进行了气相色谱质谱(GCMS)和核磁共振氢谱(1HNMR)分析。
The Column Pressure's Effect on the Elution Curve of Gas-liquid Partition Chromatography 柱前压对气液分配色谱流出曲线的影响