噻嗪酮在柑橘和土壤中的残留及消解动态  

Residue and Degradation Dynamic of Buprofezin in Citrus and Soil

作　　者：李小娇[1,2,3] 龚道新[2] 成应向[1,3] 伍一红[2] 张杰[2] 罗杨[2] 

机构地区：[1]水污染控制技术湖南省重点实验室,湖南长沙410004 [2]湖南农业大学资源环境学院,湖南长沙410128 [3]湖南省环境保护科学研究院,湖南长沙410004

出　　处：《安徽农业科学》2011年第9期5334-5336,5539,共4页Journal of Anhui Agricultural Sciences

基　　金：农业部农药检定项目(NYCL20080368)

摘　　要：[目的]监测噻嗪酮在柑橘和土壤中的残留量。[方法]采用气相色谱法测定噻嗪酮在柑橘和土壤中的残留。[结果]噻嗪酮在柑橘全果中的平均回收率为96.17%～97.38%,变异系数为6.10%～9.07%;在果肉中的平均回收率为95.24%～105.46%,变异系数为3.30%～6.01%;在果皮中的平均回收率为88.76%～93.64%,变异系数为5.12%～6.27%;在土壤中的平均回收率为97.79%～104.3%,变异系数为2.45%～9.21%。噻嗪酮在柑橘和土壤中的消解动态以及最终残留结果表明,在湖南长沙、浙江杭州和贵州贵阳3地柑橘中的消解半衰期分别为7.65、7.64、8.40 d,在土壤中的消解半衰期分别为13.75、9.97、10.18 d。[结论]在柑橘上使用25%噻嗪酮悬浮剂对水剂,按照推荐使用剂量为166.7～250.0 mg/L,施药2～3次的情况下,噻嗪酮在柑橘上的安全期可定为14 d。[Objective]The paper was to detect the residue of buprofezin in citrus and soil.[Method]Gas chromatography（GC） method was used to measure the residue of buprofezin in citrus and soil.[Result]The average recovery rate of buprofezin in entire citrus fruit was 96.17%-97.38%,and the variation coefficient was 6.10%-9.07%;the average recovery rate in pulp was 95.24%-105.46%,and the variation coefficient was 3.30%-6.01%;the average recovery rate in peel was 88.76%-93.64%,and the variation coefficient was 5.12%-6.27%;the average recovery rate in soil was 97.79%-104.3%,and the variation coefficient was 2.45%-9.21%.The degradation dynamics and the final residue results of buprofezin in citrus and soil showed that the degradation half-lives in citrus in Changsha（Hunan）,Hangzhou（Zhejiang） and Guiyang（Guizhou） were 7.65,7.64 and 8.40 d,and the degradation half-lives in soil in three places were 13.75,9.97 and 10.18 d,respectively.[Conclusion]When 25% buprofezin SC watered agent were sprayed in citrus fruits for 2-3 times according to the recommended dose of 166.7-250.0 mg/L,the safe period of buprofezin in citrus could be set as 14 d.

关 键 词：噻嗪酮 柑橘 土壤残留 消解动态 

分 类 号：S481.8[农业科学—农药学]