简介:本文采用分散固相萃取技术作为前处理手段,结合高效液相色谱串联质谱(HPLC-MS/MS)高灵敏度和高选择性的优势,建立了一种水产品中氯霉素类药物残留的检测方法。实验探讨和优化了以分散固相萃取净化样液过程中的提取条件、固体吸附剂的用量等。并优化检测方法的色谱、质谱条件,采用多反应监测模式(MRM)对目标物进行定性、定量分析。结果表明,目标物在一定的浓度范围内具有良好的线性关系;方法的检出限为0.07~0.10μg·kg^-1。对样品进行三个水平加标实验,目标化合物的回收率为88.81%~102.89%,相对标准偏差(RSD,n=6)为2.30%~4.87%。该方法定性定量准确,灵敏度高,有效去除基质干扰,适用于水产品中氯霉素类药物残留量的定性、定量分析。
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