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建立了番茄酱中吡虫啉、多菌灵、甲基硫菌灵、霜霉威、灭多威和烯酰吗啉等农药残留的超高效液相色谱-串联质谱(UPLC-MS/MS)检测方法.样品用含0.1%(体积分数)乙酸的甲醇-水(1∶1,v/v)混合溶液提取,采用Waters Acquity UPLC BEH C18色谱柱,以甲醇和10 mmol/L 乙酸铵溶液为流动相进行梯度洗脱分离,经电喷雾正离子(ESI+)电离及多反应监测(MRM)模式来测定目标化合物,采用基质标准溶液曲线法进行定量.结果表明:6种农药在0.005~0.2 mg/L 的范围内线性关系良好(r>0.995);当标准添加水平为0.02、0.05和0.2 mg/kg 时,回收率为66.8% ~102.9% ;相对标准偏差均小于15% ; 6种农药的定量限(以信噪比(S/N)>10计)均为0.02 mg/kg.该方法简便、快速、灵敏和准确,非常适合番茄酱中这6种农药残留的快速检测及定量分析.

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