气相色谱-质谱法测定白酒中挥发性酚类物质

Determination of Volatile Phenolic Compounds in Baijiu by GC-MS

用液液萃取作为前处理方法,建立气相色谱-质谱联用法测定白酒中10种挥发性酚类物质含量的方法。该方法检测得出的质谱图在谱库进行检索,准确地对10种挥发性酚类物质进行定性、定量分析。加标回收率为83.9%～101.2%,RSD值为1.1%～2.9%。定性、定量准确度较高,重复性好。实验结果表明,该方法适用于白酒中挥发性酚类化合物的研究。

GC-MS was used to detect the content of I0 kinds of volatile phenolic compounds in Baijiu pretreated by liquid-liquid extraction. Library searching of the obtained mass spectra was performed to achieve more accurate quantitative and qualitative analysis of the 10 volatile phenolic compounds. The recovery rate was 83.9 %-101.2 %, and RSD was 1.1% ～2.9 %. Qualitative and quantitative accuracy was high with satisfactory repeatability. The experimental results proved that the method was suitable for the study of volatile phenol compounds in Baijiu.