气质联用法测定黄瓜中多农药残留及其动态降解研究  

Determination of multi-residues in cucumber by GC-MSD and degradation of pesticides

作　　者：周鸿[1] 康长安 何娟[3] 刘小玲[1] 

机构地区：[1]江西省疾病预防控制中心,南昌330029 [2]江西省环境监测中心站,南昌330029 [3]河南工业大学化学化工学院,郑州450052

出　　处：《中国卫生检验杂志》2009年第6期1259-1261,共3页Chinese Journal of Health Laboratory Technology

基　　金：河南省重大科技攻关项目(食品安全关键技术0422031200)

摘　　要：目的：本文采用气质联用法,以黄瓜为基质,建立了15种常用及已被禁止在蔬菜上使用的农药的残留快速扫描方法。方法：各农药组分回收率在69.38%～138.20%之间;相对标准偏差在4.78%～23.70%之间;方法的最低检出限在0.0044～0.0632 mg/kg之间。并应用所建立的方法研究了9种农药在黄瓜上喷施后的残留情况,在固定间隔时间内检测瓜体上的残留量。结果：所得到的数据可同时告诉我们哪些农药适合在什么作物上使用以及各种农药在同一作物上的降解速率。结论：这一研究为指导农民用药以及快速简便的得到各农药喷施后在不同作物上的安全间隔期具有重要意义,也为同时研究多种农药在同一作物上的降解提供一种可行的方法。Objective：A method for measuring simultaneously the residues as many as 15 pesticides, which are in common use or forbidden in cucumber, by GC -MSD has been developed. Methods： The recoveries were obtained between 69. 38% and 138.20% with relative standard deviations between 4. 78% and 23.70%. Results：The degradation of 9 pesticides in the 15 was studied by the method developed. Conclusion：This research provides the safe intervals of the pesticide and a potential method for the study of multi - residue degradation on a plant simultaneously.

关 键 词：气质联用(GC-MSD) 多农药残留 转换溶剂 动态降解 

分 类 号：O657.71[理学—分析化学]