摘要
目的:建立QuEChERS-UPLC-MS/MS法测定新疆枸杞中31种农药残留的方法。方法:样品经改进后的QuEChERS法净化后,经正负离子分段扫描和多反应监测模式检测,基质匹配标准溶液外标法定量。结果:在0.001~0.200 mg·L^(-1),31种目标化合物的线性相关系数均>0.996。回收率为70.2%~111.4%,相对标准偏差≤11.3%,检出限为0.01~7.97μg·kg^(-1)。结论:该方法快速、简便、准确,具有较强的适用性,可用于含糖量高的枸杞试样中多种农药残留的快速筛查与确证。
Objective:To establish a QuEChERS-UPLC-MS/MS method for the determination of 31 pesticide residues in Xinjiang Lycium chinense Miller.Method:The samples were purified by the improved QuEChERS method,detected by the positive and negative ion scanning and multi-reaction monitoring mode,and quantified by matrix matching standard solution external standard method.Result:In the range of 0.001~0.200 mg·L^(-1),the linear correlation coefficients of 31 target compounds were greater than 0.996,the recoveries were 70.2%~111.4%,the relative standard deviations were less than or equal to 11.3%,and the detection limits were 0.01~7.97μg·kg^(-1).Conclusion:The method is rapid,simple,accurate and has strong applicability,and can be used for rapid screening and confirmation of pesticide residues in Lycium chinense Miller samples with high sugar content.
作者
卢彬
范蕊
王文文
陈国通
严欢
曹雪琴
LU Bin;FAN Rui;WANG Wenwen;CHEN Guotong;YAN Huan;CAO Xueqin(Xinjiang Uygur Autonomous Region Academy of Instrumental Analysis,Urumqi 830011,China)
出处
《食品安全导刊》
2024年第23期52-57,共6页
China Food Safety Magazine
基金
新疆维吾尔自治区重点研发专项(2023B02009-3)
新疆维吾尔自治区公益性科研项目(KY2023120)。
关键词
QUECHERS
新疆枸杞
农药残留
超高效液相色谱-串联质谱/质谱法
QuEChERS
Xinjiang Lycium chinense Miller
pesticide residues
ultra-performance liquid chromatography-tandem mass spectrometry