全二维气相色谱/飞行时间质谱法在莪术挥发油组成分析中的应用

Application of Comprehensive Two-dimensional Gas Chromatography/ Time-of-flight Mass Spectrometry to Analysis of Zedoary Volatile Oil

通过优化 GC× GC的柱系统、温度程序和调制参数等色谱条件 ,建立了分析中药莪术挥发油组成的全二维气相色谱 /飞行时间质谱 ( GC×GC/TOFMS)方法 ,实现了莪术挥发油的单个组分与族组分分析 .采用所建立的 GC×GC/TOFMS方法 ,鉴定出匹配度大于 80 0的组分有 2 49种 ,其中单萜 1 8种 ,单萜含氧衍生物 3 4种 ,倍半萜 3 5种 ,倍半萜含氧衍生物 3 7种 ,有 69种组分的体积分数大于 0 .0 2 % .

After optimizing the chromatographic conditions including column system,temperature program and modulation parameters,an analytical method of zedoary volatile oil was established based on comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry(GC×GC/TOFMS). The analysis of the individual components and groups were achieved. Under the optimized conditions the components of zedoary volatile oil from Guangxi province,China were identified by GC×GC/TOFMS. Among 249 components with similarities over 800,there are 18 terpenes,34 oxygenated terpenes,35 sesquiterpenes and 37 oxygenated sesquiterpenes. Sixty-nine of these components have the individual volume fractions of over 0.02%.