液相色谱-串联质谱法检测土壤中26种磺酰脲类残留  

Determination of 26 sulfonylurea residues in soil by liquid chromatography-tandem mass spectrometry

作　　者：丁鸰 赵宾宾 刘亚芹 Ding Ling;Zhao Binbin;Liu Yaqin(Environmental Development Center of the Ministry of Ecology and Environment,beijing,100101;Beijing Purkinje General Instrument Co.,Ltd.,beijing,101200)

机构地区：[1]生态环境部环境发展中心,北京100101 [2]北京普析通用仪器有限责任公司,北京101200

出　　处：《现代科学仪器》2024年第3期18-23,共6页Modern Scientific Instruments

摘　　要：本文以土壤中的26种磺酰脲类残留为研究对象,样品分别经过1%乙酸-乙腈进行提取,使用分子印迹柱净化,采用LC-MS/MS多反应监测正/负离子模式测定,外标法定量。在2.5~100ng/ml浓度范围内呈现出良好的线性关系,在四个添加水平范围内(0.5,1,2,50μg/kg)磺酰脲类在土壤中的回收率为72.62%-119.24%,相对标准偏差为3.07%~11.19%,定量限(LOQ)为0.5μg/kg。In this paper,the residues of 26 sulfonylurea in soil were taken as the research object.The samples were extracted by 1%acetic acid in acetonitrile,and purified by molecular imprinting column,determined by LC-MS/MS multi-reaction monitoring positive/negative ion mode,and quantified by external standard method.It showed a good linear relationship in the concentration range of 2.5~100 ng/mL.The recoveries of sulfonylureas in soil were 72.62%-119.24%within the range of four addition levels(0.5,1,2,50μg/kg),and the relative standard deviations were 3.07%~11.19%,the limit of quantification(LOQ)was 0.5μg/kg.

关 键 词：分子印迹 LC-MS/MS 土壤 磺酰脲类 

分 类 号：O657.63[理学—分析化学]