QuEChERS-UPLC/MS/MS法测定猪肉中10种抗病毒药残留量

    Determination of 10 antiviral drug residues in pork by QuEChERS-UPLC/MS/MS

    • 摘要: 建立了基于QuEChERS-超高效液相色谱-串联质谱法(UPLC-MS/MS)快速测定猪肉中10种抗病毒药残留量的方法。猪肉样品采用1%乙酸乙腈提取,经QuEChERS净化后,在正离子多反应监测(multiple reaction monitoring, MRM)模式下分析。结果表明:10种抗病毒药在2.5~125.0 μg·kg−1的范围内线性关系良好(相关系数r >0.998 9);检出限(LOD,S/N=3)和定量限(LOQ,S/N=10)分别为0.05~0.50、0.10~1.00 μg·kg−1。空白样品在3个添加水平(2.5、5.0、20 μg·kg−1)下的加标回收率为71.2%~115.6%,相对标准偏差为0.4%~8.3%。本方法准确度和灵敏度均较高,可以满足猪肉中10种抗病毒药残留的检测需求。

       

      Abstract: To establish a method for the rapid determination of 10 kinds of antiviral drug residues in pork based on QuEChERS-ultra high performance liquid chromatography tandem mass spectrometry(UPLC-MS/MS). The samples were extracted by 1% acetic acid-acetonitrile, cleaned-up by QuEChERS, and then detected in positive ion multiple reaction monitoring(MRM)mode. The results showed that the 10 kinds of antiviral drugs showed good linearity(correlation coefficient r0.9989)in the range of 2.5−125.0 μg·kg−1; the limits of detection(LOD, S/N=3)and limits of quantification(LOQ, S/N=10)were in the ranges of 0.05−0.50 μg·kg−1, 0.10−1.00 μg·kg−1. The spiked experiments were carried out in blank samples at three levels(2.5, 5.0 and 20 μg·kg−1, respectively). The average recoveries ranged from 71.2% to 115.6% with relative standard deviations(RSDs)of 0.4%−8.3%. The method has high accuracy and sensitivity, and can meet the detection needs of antiviral drug residues in pork.

       

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