文章基本信息

标题：Modified QuEChERS Extraction and HPLC-MS/MS for Simultaneous Determination of 155 Pesticide Residues in Rice (Oryza sativa L.)
本地全文：下载
作者：Maria Graça Melo ; Ana Carqueijo ; Andreia Freitas 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2020
卷号：9
期号：1
页码：18-33
DOI：10.3390/foods9010018
出版社：MDPI Publishing
摘要：Rice (Oryza sativa L.) is the staple food of more than half of the world’s population. The main factors affecting the quality of rice include grain length, texture, stickiness, flavor, and aroma. Pesticides are intended for the protection of plant products from weeds, fungi, or insects. However, pesticides also result in negative effects such as environment disturbances, pest resistance and toxicity to both users and food consumers. The aim of this study was to conduct validation experiments of a method for the determination of multi-pesticides in rice, a model food of other cereals. A quick, easy, cheap, effective, rugged, and safe (QuEChERS) method was used for the extraction of pesticide residues from rice followed by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) with a triple quadrupole instrument using electrospray ionization. The analytical method has chromatography-tandem according to SANTE/11813/2017. The limit of quantification was 5 μg/kg. Recoveries for the 155 analyzed pesticides ranged between 77.1% for pirimiphos-ethyl and 111.5% for flutriafol and they were determined at 3 spiking levels. The proposed method was demonstrated to be quick, simple, precise, and accurate and allowed for evaluating the compliance of cereals samples with legislated maximum residue levels of pesticides in the European Union.
关键词：cereals; high-performance liquid chromatography-tandem mass spectrometry; pesticides; quick; easy; cheap; effective; rugged; and safe (QuEChERS) method; rice; validation cereals ; high-performance liquid chromatography-tandem mass spectrometry ; pesticides ; quick; easy; cheap; effective; rugged; and safe (QuEChERS) method ; rice ; validation