基质固相分散萃取测定茶叶中农药多残留初探  

Determination of multi-residue pesticides in tea by matrix solid-phase dispersion extraction

作　　者：杨阳[1] 孙世群[1] 崔康平[1] 施帆君[1] 孔殿超[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2010年第7期1062-1065,1089,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：文章建立了一个简单快速、能同时分析茶叶中多种农药残留的新方法。采用一种新的样品前处理方法——基质固相分散（Matrix Solid-Phase Dispersion,MSPD）萃取替代传统的液-液萃取、固相萃取,从茶叶中提取、净化14种常用农药残留,采用GC-FPD分析检测;14种农药的回收率在65.4%-110.6%之间,相对标准偏差小于19.3%,LOD为5.0-30.0μg/L,LOQ为25.0-100.0μg/L。An effective and simple analytical method for detecting multi-residue pesticide is proposed.A new sample preparation method named matrix solid-phase dispersion（MSPD） is studied.The conventional liquid-liquid extract and the solid phase extract were displaced by MSPD for extracting and cleaning the 14 pesticides from tea.The pesticides were assayed by gas chromatography with flame photometric detection（GC-FPD）.The returns-ratio is between 65.4%-110.6%.The relative standard deviation（RSD） is lower than 19.3%,the limit of detection（LOD） is 5.0-30.0 μg/L,and the limit of quantification（LOQ） is 25.0-100.0 μg/L.

关 键 词：基质固相分散 农药多残留 有机磷 茶叶 气相色谱 

分 类 号：X836[环境科学与工程—环境工程]