中国农业大学 动物医学院,北京 100193
夏 曦,博士,教授,研究方向:兽医药理学与毒理学专业,E-mail:xxia@cau.edu.cn
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严祖浩,李晓薇,夏曦.牛奶中69种兽药残留的超高效液相色谱-四极杆-飞行时间质谱快速筛查[J].分析测试学报,2023,42(10):1309-1318.
YAN Zu-hao,LI Xiao-wei,XIA Xi.Rapid Screening of 69 Veterinary Drug Residues in Milk by Ultra-high Performance Liquid Chromatography-Quadrupole-Time-of-flight Mass Spectrometry[J].Journal of Instrumental Analysis,2023,42(10):1309-1318.
严祖浩,李晓薇,夏曦.牛奶中69种兽药残留的超高效液相色谱-四极杆-飞行时间质谱快速筛查[J].分析测试学报,2023,42(10):1309-1318. DOI: 10.19969/j.fxcsxb.23070302.
YAN Zu-hao,LI Xiao-wei,XIA Xi.Rapid Screening of 69 Veterinary Drug Residues in Milk by Ultra-high Performance Liquid Chromatography-Quadrupole-Time-of-flight Mass Spectrometry[J].Journal of Instrumental Analysis,2023,42(10):1309-1318. DOI: 10.19969/j.fxcsxb.23070302.
建立了超高效液相色谱-四极杆-飞行时间质谱快速筛查牛奶中,β,-受体激动剂类、磺胺类、喹诺酮类、四环素类4类共69种兽药残留量的分析方法。牛奶用含0.5%甲酸的乙腈溶液提取,乙腈饱和的正己烷净化除脂,使用ACQUITY UPLC BEH C,18,色谱柱分离,以0.1%甲酸和含0.1%甲酸的甲醇-乙腈(2∶8)为流动相梯度洗脱,10 min内可实现69种兽药的良好分离,在电喷雾离子源(ESI)正离子模式下运用全扫描和数据依赖采集(DDA)方式进行测定。牛奶中69种兽药的定量下限(LOQ)为10 μg·kg,-1,;在10、50、100 μg·kg,-1,下的平均加标回收率为59.0%~120%,相对标准偏差(RSD)为0.80%~13%。该方法操作简单,检测效率高,可用于牛奶中69种兽药的快速筛查。
An ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry method was developed for rapid screening of 69 veterinary drugs belonging to four classes(,β,-agonists,sulfonamides,quinolones and tetracyclines) in milk. The extraction was performed using acetonitrile solution containing 0.5% formic acid,and the purification was carried out by liquid-liquid extraction using ,n,-hexane for defatting. An ACQUITY UPLC BEH C,18, column was used for chromatographic separation,and gradient elution was performed using 0.1% formic acid and methanol-acetonitrile(2∶8) containing 0.1% formic acid as the mobile phases. The electrospray ionization was used in positive ion mode for full scan and data-dependent acquisition mode(DDA) detection. Efficient separation of 69 veterinary drugs can be achieved within 10 min. The limits of quantification(LOQs) of 69 veterinary drugs in milk was 10 μg·kg,-1,. The average recoveries was 59.0%-120% with relative standard deviations(RSDs) of 0.80%-13% at three spiked levels(10,50 and 100 μg·kg,-1,). This method is simple and efficient,and can be used for the rapid screening of 69 veterinary drugs in milk.
牛奶超高效液相色谱飞行时间质谱兽药残留快速筛查
milkultra-high performance liquid chromatographytime-of-flight mass spectrometryveterinary drug residuesrapid screening
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