QuEChERS-液相色谱串联质谱法测定动物源性食品中氟喹诺酮类残留量
Jiangxi Journal of Animal Husbandry & Veterinary Medicine(2019)
Abstract
建立了用QuEChERS-液相色谱串联质谱法测定禽肉、禽蛋和牛奶中15种氟喹诺酮类药物残留的检测方法.样品经酸化乙腈提取后,经QuEChERS试剂净化,液相色谱串联质谱测定,内标法定量.结果表明,牛奶和禽肉的检出限为2.0 ng/g,定量限为4.0 ng/g,禽蛋的检出限为3.0 ng/g,定量限为4.0 ng/g.在2.0~100 ng/mL的添加浓度范围内线性良好,线性相关系数(r)大于0.995,牛奶、禽肉以及禽蛋三种基质在添加浓度为4.0~50.0 ng/g范围时,回收率为61%~105.2%,批内、批间精密度均小于15%.该方法简便、快速、准确,适用于大批量动物源性样品中氟喹诺酮的快速检测.
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