气相色谱法测定番茄中乙烯利的残留量  

Determination of Ethephon Residue in Tomaotoes by GC

作　　者：李晓娜[1] 刘龙腾[1] 陈钟[1] 吴常敏[1] 胡德禹[1] 卢平[1] 张钰萍[1] 

机构地区：[1]贵州大学精细化工研究开发中心绿色农药与农业生物工程国家重点实验室培育基地和教育部重点实验室,贵州贵阳550025

出　　处：《农药科学与管理》2013年第6期32-35,共4页Pesticide Science and Administration

摘　　要：建立了一种气相色谱法（GC）测定番茄中乙烯利残留的方法。番茄样品经甲醇-盐酸溶液（V/V=95∶5）提取,无水乙醚萃取,重氮甲烷衍生化,采用GC-NPD检测。结果表明：该方法的平均回收率为92.85%~97.59%,相对标准偏差（RSD）为2.79%~4.38%（n=5）,乙烯利的最小检出浓度为0.015 86mg/kg。该方法的杂质干扰少,准确性和灵敏度高,能快速测定出番茄中乙烯利的残留量。A method for determination of ethephon residues in tomatoes by GC was established. The sample of tomatoes were extracted with mixture of methanol and hydrochloric acid （V/V= 95：5）, purified by diethyl ether and derivatizated by diazomethane. The results showed that the average recovery of this method ranged from 92.58% to 97.59%. The relative standard deriation （RSD） was 2.79%-4.38% （n=5） and the minimum detectable concentration was 0.015 86mg/kg. The method can rapidly detect ethephon residues in tomatoes with the advantages of less interfer- ing, high accuracy, and sensitivity.

关 键 词：乙烯利 气相色谱 番茄 重氮甲烷 衍生化 

分 类 号：S481.8[农业科学—农药学] S482.8[农业科学—植物保护]