中文摘要：本研究利用分散液-液微萃取/气相色谱-火焰离子化检测技术对果汁和水样中六种有机磷农药（伏杀硫磷、敌敌畏、马拉硫磷、二嗪磷、丙溴磷、毒死蜱）进行提取、浓缩和浓度测定。试验结果表明：该方法检测效率高，能检测到苹果汁中二嗪磷痕量（ng/L）残留。
外文摘要：In the present study, an elevated temperature, dispersive, liquid-liquid microextraction/gas chromatography-flame ionization detection was investigated for the determination, pre-concentration, and extraction of six organophosphorus pesticides (malathion, phosalone, dichlorvos, diazinon, profenofos, and chlorpyrifos) residues in fruit juice and aqueous samples. A mixture of 1,2-dibromoethane (extraction solvent) and dimethyl sulfoxide (disperser solvent) was injected rapidly into the sample solution heated at an elevated temperature. Analytical parameters, including enrichment factors (1600-2075), linearity (r > 0.994), limits of detection (0.82-2.72 ng mL (1)) and quantification (2.60-7.36 ng mL (1)), relative standard deviations (< 7%) and extraction recoveries (64-83%), showed the high efficiency of the method developed for analysis of the target analytes. The proposed procedure was used effectively to analyse selected analytes in river water and fruit juice, and diazinon was found at ng mL (1) concentrations in apple juice. (C) 2016 Elsevier Ltd. All rights reserved.
外文关键词：Organophosphorous pesticides；Elevated temperature dispersive liquid–liquid microextraction；Gas chromatography; Aqueous sample
作者：Mir Ali Farajzadeh*a；Mohammad Reza Afshar Mogaddama；Samaneh Rezaee Aghdama；Nina Nouria；Mahdi Bamorrowatb
作者单位：Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
期刊名称：FOOD CHEMISTRY
期刊影响因子：4.052
出版年份：2016
出版刊次：5
点击下载：应用高温分散液-液微萃取/气相色谱-火焰离子化技术测定水样中有机磷农药残留情况