饲料样品经1%三氯乙酸-二甲基亚砜提取,Waters Oasis MCX柱净化,超高效液相色谱分离,最终采用电喷雾串联四极杆质谱进行检测.结果表明,三聚氰胺在饲料中的含量范围为10~5 000 μg/kg时,线性关系良好(r>0.99).在10~100 μg/kg 的添加水平范围内的平均回收率为83% ~94% ,相对标准偏差为4.2% ~6.5% .该方法的检出限为10 μg/kg.
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