建立了一种简便、快速的可同时测定软木塞中两种霉味物质(2,4,6-三氯苯甲醚(TCA)和2,4,6-三溴苯甲醚(TBA))的气相色谱-质谱联用(GC-MS)方法.软木塞样品采用甲醇超声萃取,N-丙基乙二胺(PSA)固相萃取柱净化,浓缩后采用GC-MS进行分析,外标法定量.在10 ~ 10000 μg/L的质量浓度范围内,TCA和TBA均有较好的线性关系,相关系数(r2)大于0.99.通过对不同种类的软木塞空 白样品进行加标回收率试验和精密度试验考察方法的可行性.结果表明TCA和TBA的回收率介于88.4%与97.6%之间,相对标准偏差介于1.02%与4.58%之间.TCA和TBA的检出限分别为12 μg/L和18 μg/L,定量限分别为40μg/L和50μg/L.本方法适用于市售瓶装葡萄酒软木塞中TCA和TBA的检测.
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