建立了采用液相色谱检测大豆、花椰菜、樱桃、木耳、葡萄酒、茶叶、蜂蜜、猪肝、鸡肉、鳗鱼等多种食品基体中喹氧灵残留的方法.利用乙酸乙酯提取样品中残留的喹氧灵,用氨基固相萃取小柱净化;对于脂肪含量较高的样品,在进行固相萃取前采用凝胶渗透色谱净化技术去脂.方法的准确度与精密度较好,在添加浓度为0.010～5.0 mg/kg时,平均回收率及相对标准偏差分别为82% ～96%及3.2% ～11.8% ;在0.050 ～50.0 mg/L 范围内有良好的线性关系,检测限达0.010 mg/kg.该方法适用性广,能消除复杂基质带来的干扰,可用于各类食品中喹氧灵残留的分析.
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