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基于QuEChERS净化/气相色谱法测定蔬菜及水果中16种有机氯农药残留
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作者单位
王晓春,梁丽,周焕英 1.鞍山师范学院化学与生命科学学院辽宁鞍山1140162.军事科学院军事医学研究院环境医学与作业医学研究所天津300050 
基金项目:国家重点研发计划资助(2017YFC1601101);国家自然科学基金资助项目(21775005);鞍山师范学院重大科研项目(16kyxm01);辽宁省百千万人才工程项目(2019921009)
中文摘要:该文建立了蔬菜及水果中16种有机氯农药残留的QuEChERS净化/气相色谱快速检测方法。样品经1%冰乙酸乙腈处理,QuEChERS净化,气相色谱分离后,以色谱峰保留时间定性,外标法定量。结果表明:16种有机氯农药在20~100 μg/L质量浓度范围内的线性关系良好,相关系数均大于099,检出限为016~290 μg/L,在4种基质(油菜、黄瓜、橙子、苹果)中的加标回收率为701%~119%,相对标准偏差(RSD)为023%~52%。与其它前处理方法相比,该方法简便、快速、准确、高效,可用于蔬菜及水果样品中有机氯残留的高通量快速筛查。
中文关键词:QuEChERS  气相色谱  蔬菜及水果  有机氯农药
 
Determination of 16 Organochlorine Pesticides Residues in Vegetables and Fruits by Gas Chromatography with QuEChERS Purification
Abstract:In this paper,a rapid method was developed for the simultaneous determination of 16 organochlorine pesticides(OCPs) in cucumber,cole rape,orange and apple by QuEChERS purification and gas chromatography with electron capture detection(GC/ECD).Pesticide residues in vegetable and fruit samples were extracted by QuEChERS method with acetonitrile containing 1% acetic acid.The retention time for peaks of the organochlorine pesticide was used for qualitative analysis,and external standard method was applied to the quantitative analysis.Results showed that there were good linear relationships for 16 kinds of OCPs in the range of 20-100 μg/L with correlation coefficients larger than 099.The detection limits of the method were in the range of 016-290 μg/L.The average recoveries of 16 OCPs from 4 matrics(cole rape,cucumber,orange,apple) ranged from 701% to 119% with relative standard deviations(RSDs) of 023%-52%.Compared with other pretreatment methods,the method is rapid,effective,simple,cheap and reliable,and is suitable for the high throughput and rapid detection of OCPs residues in vegetable and fruit samples.
Key Words:QuEChERS  gas chromatography  vegetables and fruits  organo chlorine pesticide
引用本文:王晓春,梁丽,周焕英.基于QuEChERS净化/气相色谱法测定蔬菜及水果中16种有机氯农药残留[J].分析测试学报,2021,40(3):401-405.
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