期刊论文

Rapid Screening of 32 Pesiticides Residues in Vegetables by QuEChERS-HPLC-Q-TOF/MS

中文

食品工业

1004-471X

2020

41

4

289-293

本校为第一机构

建立了QuEChERS-高效液相色谱-四极杆-飞行时间质谱法用于蔬菜中32种农药残留的快速筛查与确证分析方法。乙睛为提取剂,氯化钠盐析, C18和PSA为净化剂,电喷雾正离子扫描。通过TOF MS-IDA-MS/MS扫描模式,一次采集即可同时获得农药分子的一级精确质量数和二级质谱图信息。在线性范围内32种化合物线性关系良好,相关系数均大于0.999 0,在三个加标水平（1, 4和20 LOQ）下的平均回收率为70.41%～103.1%,相对标准偏差为1.2%～11.2%,方法检出限LOD为0.3～1.3μg/kg,定量限LOQ为1.0～4.0μg/kg。与国标相比,大大缩短前处理时间;此外,该方法中吡虫啉、虫酰肼等9种农药的方法检出限得到了有效降低;除乙霉威...

An analytical method for rapid screening and accurate quantification of 32 pesticides in vegetables was developed using QuEChERS cleanup with high-performance liquid chromatography coupled with quadrupole-time of flight mass spectrometry(HPLC-Q-TOF/MS).The samples were extracted with acetonitrile,salted out with sodium chloride,and then cleaned up with C18 and PSA.The accurate mass and fragment ions of 32 pesticides were simultaneously created using TOF MS-IDA-MS/MS acquisition in a single run.The correlation coefficients(r)were more than 0.999...