采用液液萃取和高效液相色谱-气相色谱联用建立了白酒、啤酒和葡萄酒中微量饱和烃矿物油(mineral oil saturated hydrocarbons,MOSH)和芳香烃矿物油(mineral oil aromatic hydrocarbons,MOAH)的高灵敏度测定方法,方法的定量限为0.05 mg/L,加标回收率为87%~107%,相对标准偏差为1.9%~4.9%。应用该方法调查了市售17个饮料酒(其中白酒9个,啤酒和葡萄酒各4个)中的矿物油污染情况。结果表明:所有啤酒和葡萄酒样品均未检出矿物油,但有5个白酒被检出MOSH,质量浓度为0.06~2.74 mg/L;其中2个检出MOAH,分别为0.11和1.24 mg/L;这些阳性样品的矿物油含量与酒精度呈正相关,其部分污染可能来自包装金属罐。
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