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第 44 卷第 1 期Vol. 44 No. 1
2014 年 2 月Feb 2014

所屬欄目:分析與測試

啶蟲(chóng)脒在茶葉和土壤中的殘留和降解動(dòng)態(tài)研究
吳 曼1,李添寶1,黃 路2,3,項 軍2,3,陳九星2,3*,胡 禮2,3,張 萍2,3 (1. 湖南師范大學(xué) 化學(xué)化工學(xué)院,湖南 長(cháng)沙 410083; 2. 湖南化工研究院 國家農藥創(chuàng )制工程技術(shù)研究中心,湖南 長(cháng)沙 410014; 3. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室,湖南 長(cháng)沙 410014)
摘 要:建立了茶葉和土壤中啶蟲(chóng)脒的氣相色譜殘留檢測方法,啶蟲(chóng)脒最低檢出量為0.02 ng,最低檢出濃度為0.01 mg/kg。在0.01~1.0 mg/kg 添加水平范圍內,啶蟲(chóng)脒在茶葉中的平均添加回收率為78.9%~103.8%,相對標準偏差1.37%~3.92%;在土壤中的平均添加回收率為81.8%~91.4%,相對標準偏差2.58%~6.83%。采用田間實(shí)驗方法研究了啶蟲(chóng)脒的降解動(dòng)態(tài)規律,啶蟲(chóng)脒在湖南、浙江、四川3地的茶葉和土壤中的消解半衰期分別為 3.36~8.77 d和 1.23~16.5 d,屬于極低殘留農藥。
關(guān)鍵詞:啶蟲(chóng)脒;茶葉;土壤;殘留;降解動(dòng)態(tài)
中圖分類(lèi)號:S481  文獻標識碼:B  文章編號:1009-9212(2014)01-0067-06
Residues and Degradation Dynamics of Acetamiprid in Tea and Soil
WU Man1,LI Tian-bao1,HUANG Lu2,3,XIANG Jun2,3,CHEN Jiu-xing2,3*,HU Li2,3,ZHANG Ping2,3 (1. College of Chemistry and Chemical Engineering of Hunan Normal University,Changsha 410081,China;2. National Engineering Research Center for Agrochemicals,Hunan Research Institute of Chemical Industry,Changsha 410014,China;3. Hunan Province Key Laboratory for Agrochemicals,Changsha 410014,China)
Abstract:A method for the determination of acetamiprid residues in tea and soil by GC-ECD was developed. Detection limit of acetamiprid was 0.02 ng and its concentration limit was 0.01 mg/kg in tea or in soil. The average recovery of acetamiprid from tea spiked at the level from 0.01 to 1 mg/kg varied from 78.9% to 103.8%. Similarly,average recovery from soil fortified at 0.01 to 1 mg/kg varied from 81.8% to 91.4%. The relative standard deviation was 1.37%~3.92% and 2.58%~6.83%,respectively. The degradation dynamics of acetamiprid was studied under field conditions. The half lives varied from 3.36 d to 8.77 d in tea and 1.23 d to 16.5 d in soil from field experiments conducted in three provinces,which revealed that acetamiprid is an easily degradable pesticide.
Key words:acetamiprid;tea;soil;residue;degradation dynamic
作者簡(jiǎn)介:吳 曼(1989-),女,安徽金寨人,碩士研究生,主要從事有機分析研究。(E-mail:shishilun@126.com)
聯(lián) 系 人: 陳九星,研究員,主要從事農藥殘留及有機污染物分析研究。(E-mail:cjx1964_1@163.com)
收稿日期: 2014-01-0
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