液相色谱-质谱联用法测定蔬菜中农药残留的基质效应研究  

Study on Matrix Effects of Liquid Chromatography-Mass Spectrometry on the Determination of Pesticide Residues in Vegetables

作　　者：吕进锋 王立才 LYU Jinfeng;WANG Licai(Zhanjiang Agricultural Products Quality Safety Center,Zhanjiang 524200,China;Suixi Agricultural Products Quality Safety Supervision and Testing Station,Zhanjiang 524300,China)

机构地区：[1]湛江市农产品质量安全中心,广东湛江524200 [2]遂溪县农产品质量安全监督检测站,广东湛江524300

出　　处：《食品安全导刊》2024年第35期37-40,共4页China Food Safety Magazine

摘　　要：选取5种蔬菜作为基质,采用液相色谱-质谱联用法检测,并进行基质效应分析。结果表明,农药成分在5种蔬菜基质中大多表现为弱基质效应,少部分表现为较强基质效应。进一步选取基质效应较强的样品基质进行QuEChERS净化处理,对比分析净化前后的基质效应变化,发现经QuEChERS方法净化后,农药基质效应减弱。在农药残留基质效应检测中,对于较强基质效应和弱基质效应的样品可直接进行定量分析;对于强基质效应的样品,则需要配制标准曲线进行定量校正,以确保农药残留检测结果的准确可靠。Five kinds of vegetables were selected as substrates,and liquid chromatography-mass spectrometry were used to detect them,and the matrix effect was analyzed.The results showed that most of the pesticide components showed weak matrix effect in the five vegetable matrices,and a few showed strong matrix effect.Furthermore,the sample matrix with strong matrix effect was selected for QuEChERS purification treatment,and the changes of matrix effect before and after purification were compared and analyzed,and it was found that the pesticide matrix effect was weakened after purification by QuEChERS method.In the detection of pesticide residue matrix effect,the samples with strong matrix effect and weak matrix effect can be directly quantitatively analyzed.For samples with strong matrix effects,a standard curve needs to be prepared for quantitative correction to ensure accurate and reliable pesticide residue detection results.

关 键 词：液相色谱-质谱联用法 蔬菜 农药残留 QuEChERS净化 基质效应 

分 类 号：O657.63[理学—分析化学] TS255.7[理学—化学]