文章基本信息

标题：Residue Analysis of Insecticides in Potatoes by QuEChERS-dSPE/UHPLC-PDA
本地全文：下载
作者：Débora Reis ; Pedro Silva ; Rosa Perestrelo 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2020
卷号：9
期号：8
页码：1-17
DOI：10.3390/foods9081000
出版社：MDPI Publishing
摘要：Insecticides are broadly applied in agriculture to defend crops from illnesses and pest attacks, consequently guaranteeing high production. However, their residual deposits in food products are becoming a main concern with regard to human consumption. As such, sensitive analytical methods should be developed to assess, prevent and control insecticide residues. In this research, an accurate, fast and reliable residual analytical method, that is quick, easy, cheap, effective, rugged and safe, combined with dispersive solid phase extraction (QuEChERS-dSPE), was developed for the determination of the most common insecticides used in potatoes cultivation (chlorpyrifos, λ-cyhalothrin, deltamethrin and acrinathrin), using an ultra-high performance chromatography photodiode array detector (UHPLC-PDA). The most influential extraction and instrumentation parameters that affect the method’s performance, such as extraction solvent, ratio salts, sorbents, stationary phases, gradient conditions and eluents, were assessed. Under the ideal conditions, good linearity (0.992–0.998), limits of detection (0.02–0.47 µg/kg) and quantification (0.06–1.58 µg/kg), recovery (94.1 to 112%) and precision (relative standard deviation <18%) were achieved for spiked levels between 2.5 and 50 µg/kg. The obtained results revealed that the potatoes analyzed do not represent any concern for human healthy, as the insecticide residues detected were lower than the maximum residue limits set by the European Union, Codex Alimentarius, and other organizations.
关键词：insecticides; potatoes; full factorial design; QuEChERS-dSPE; UHPLC-PDA insecticides ; potatoes ; full factorial design ; QuEChERS-dSPE ; UHPLC-PDA