分析测试学报2011，Vol.30Issue(3)：326-329,4.DOI:10.3969/j.issn.1004-4957.2011.03.019
分散液液微萃取-气相色谱法快速测定水中23种有机磷农药
Determination of 23 Organophosphorous Pesticide Residues in Water Using Dispersive Liquid- Liquid Microextraction Coupled with Gas Chromatography
摘要
Abstract
A novel method of dispersive liquid- liquid microextraction(DLLME) and gas chromatography with flame photo detection (FPD) was developed for the determination of 23 organophosphorous pesticide residues(OPPs), including sulfotep, phorate, diazinon, disulfoton, chlropyrifos-methyl,methyl-parathion, runnel, fenitrothion, malathion, chlorpyrifos, fenthion, parathion, bromophos,pirimiphos-ethyl, isofenphos-methyl, phenthoate, methidathion, profenofos, ethion, triazophos,trithion, pyridaphethione and phosmet in water sample. The influence of extraction parameters including the types and volumes of extraction solvent and disperser solvent as well as extraction time were investigated.Under the optimum conditions, the calibration curves for 23 OPPs were linear in the range of 0. 04 - 4. 0 μg/L with correlation coefticients not less than 0. 998. The limits of detection ranged from 0. 002 iμg/L to 0. 016 μg/L. The recoveries of 23 OPPs at two spiked concentration levels of 0. 08 μg/L and 2. 0 μg/L were in the range of 75％ - 109％ with relative standard deviations (RSDs) of 1.5％ - 13.3％. The DLLME technique showed the advantages of simplicity, rapidness,good recovery and high enrichment factor.关键词
分散液液微萃取/气相色谱/有机磷农药/饮用水Key words
dispersive liquid - liquid microextraction ( DLLME )/ gas chromatography ( GC )/ organophosphorus pesticides (OPPs)/ water分类
化学化工引用本文复制引用
李晓晶,陈安,黄聪,施洁,于鸿..分散液液微萃取-气相色谱法快速测定水中23种有机磷农药[J].分析测试学报,2011,30(3):326-329,4.基金项目
广州市医学科研课题资助项目(2009-YB-126) （2009-YB-126）
