Song Nho-Eul, Seo Dong-Ho, Choi Ji Yeon, Yoo Miyoung, Koo Minseon, Nam Tae Gyu
Food Analysis Center, Korea Food Research Institute, Wanju 55365, Korea.
Foods. 2019 Jul 22;8(7):273. doi: 10.3390/foods8070273.
The monitoring of food quality and safety requires a suitable analytical method with simultaneous detection in order to control pesticide and herbicide residues. In this study, a novel analytical method, referred to as "dispersive solid-liquid extraction", was applied to monitor seven sulfonylurea herbicides in strawberries. This method was optimized in terms of the amount of C and the volume of added water, and it was validated through satisfactory linearities ( > 0.99), recoveries of 70% to 84% with acceptable precisions, and limits of quantification lower than the maximum residue limits for the seven sulfonylurea herbicides in strawberries. The cleanup efficiency of the dispersive solid-liquid extraction technique was compared to that of the QuEChERS- ("quick, easy, cheap, effective, rugged and safe") based method with dispersive solid phase extraction. The recoveries of the former were found to be comparable to those involving QuEChERS C cleanup (recoveries of 74%-87%). The method was used to determine sulfonylurea herbicide residues in ten strawberry samples. None of the samples had herbicide residues higher than that of limit of quantifications (LOQs) or maximum residue limits (MRLs). The results suggest that the dispersive solid-liquid extraction method combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) is effective for the analysis of sulfonylurea herbicide residues in strawberries.
食品质量与安全监测需要一种能够同时进行检测的合适分析方法，以控制农药和除草剂残留。在本研究中，一种名为“分散固液萃取”的新型分析方法被应用于监测草莓中的七种磺酰脲类除草剂。该方法在碳的用量和加水量方面进行了优化，并通过令人满意的线性关系（>0.99）、70%至84%的回收率以及可接受的精密度和低于草莓中七种磺酰脲类除草剂最大残留限量的定量限进行了验证。将分散固液萃取技术的净化效率与基于QuEChERS-（“快速、简便、廉价、有效、耐用且安全”）的分散固相萃取方法进行了比较。发现前者的回收率与涉及QuEChERS C净化的回收率相当（回收率为74%-87%）。该方法用于测定十个草莓样品中的磺酰脲类除草剂残留。所有样品的除草剂残留均未高于定量限（LOQs）或最大残留限量（MRLs）。结果表明，分散固液萃取法结合液相色谱-串联质谱法（LC-MS/MS）对草莓中磺酰脲类除草剂残留的分析是有效的。
