便携式检测仪检测呋喃丹和对氧磷的研究  

Determination of Carbofuran and Paraoxon Using a Portable Detector

作　　者：张纪秀[1] 黄威东[1] 金盛烨[1] 郭荣波[1] 陈吉平[1] 车迅[1] 梁鑫淼[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116011

出　　处：《分析测试学报》2005年第4期89-91,共3页Journal of Instrumental Analysis

基　　金：国家科技部"食品安全关键技术"重大专项课题(2001BA804A37)

摘　　要：基于胆碱酯酶被抑制前后反应速率不同的原理,研制了便携式荧光探针农药残留检测仪,并对检测条件进行了优化,获得呋喃丹和对氧磷的检出限分别为3.0和12 μg/L,线性范围分别为3.0～37.8μg/L和12～350 μg/L.该检测仪具有操作简便,检测快速,可用于现场检测等优点,在对蔬菜和水果样品检测中,获得呋喃丹的回收率在87%～114%之间.Based on the variation of reaction rate of enzyme before and after inhibition,a portable detector for the determination of pesticide residues with a fluorescence probe was developed.Several parameters influenc-ing the performance of the detector are discussed.The detection limits and linear dynamic ranges for carbofu-ran were3.0μg/L and3.0-37.8μg/L,respectively,and for paraoxon12μg/L and12-350μg/L,re-spectively.The detector has been applied to the determination of carbofuran in spiked vegetables and fruits at different concentration levels with recoveries87%-114%.

关 键 词：酶抑制 荧光探针 便携式检测仪 呋喃丹 对氧磷 

分 类 号：O652.2[理学—分析化学] S482.33[理学—化学]