超高效液相色谱-串联质谱法检测鸡粪中16种残留抗生素

发布时间：2019-05-21 08:18

【摘要】：建立了固相萃取-超高效液相色谱-串联质谱(UPLC-MS/MS)同时检测畜禽粪便中四环素类、磺胺类、氟喹诺酮类和大环内酯类16种抗生素的分析方法。针对目标物化学性质和样品杂质情况,对质谱条件、提取液种类、超声功率等参数进行了优化。最终以50%乙腈(V/V)的磷酸盐缓冲溶液(p H=4)提取3次,经过超声、离心、旋蒸、稀释后,SAX-HLB串联小柱净化富集,用10 m L甲醇-丙酮混合液(80∶20,V/V)洗脱,35℃氮吹近干后,用含0.1%甲酸-甲醇(1∶1,V/V)定容,在UPLC-MS/MS多反应检测模式下进行定性及定量分析。结果表明,粪便中四环素类、磺胺类、氟喹诺酮类和大环内酯类抗生素的平均加标回收率为56.4%~94.6%,相对标准偏差(RSD)在2.6%~19.8%之间,方法检出限(LOD,S/N=3)和定量限(LOQ,S/N=10)分别为0.01~2.50μg/kg和0.05~7.90μg/kg。本方法简便、稳定性好、灵敏度高、重现性好,适用于畜禽粪便中多种抗生素的同时检测。
[Abstract]:A method for the simultaneous determination of 16 antibiotics such as tetracycline, sulfonamides, fluoroquinolones and macrolides in livestock and poultry feces by solid phase extraction-ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established. According to the chemical properties of the target and the impurity situation of the sample, the parameters such as mass spectrometry conditions, type of extract, ultrasonic power and so on were optimized. Finally, 50% acetonitrile (V 鈮，

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