安徽农业科学2018，Vol.46Issue(3)：140-144,5.
戊唑醇在苹果和土壤中的残留及消解规律研究
Study on Residue and Dissolving Dynamic of Tebuconazolein in Apple and Soil
罗雪婷 1吴迪 1潘洪吉 1张宝常 2王艳辉 2张希跃 1矫健1
作者信息
- 1. 北京市植物保护站,北京100029
- 2. 北京市平谷区植物保护站,北京101205
- 折叠
摘要
Abstract
[Objective] The aim was to establish a GPC-GC/MS determination method for residue of tebuconazolein in apple and soil.[Method] We determined the residue of tebuconazolein in apple and soil by GPC-GC/MS,and studied the dissolving dynamic of tebuconazolein in apple andsoil.[Result] The optimal conditions of GC-MS were as followed:the initial temperature 82 ℃ was kept for for 5 min,and then reached 300 ℃ by 8 ℃/min for 4.2 min.The sampling temperature of PTV was 120 ℃ for 5 min,and then reached 250 ℃ by 100 ℃/min for 31.7 min.Ion source temperature was 200 ℃,and the interface temperature was 250 ℃.Under the optimal conditions,the tebuconazolein residue in apple could be isolated with impurities well,the linear relationship was good,and the correlation coefficient was 0.999.The method of QuEChERS was optimized from two aspects of extraction solvent type and adsorbent type.Finally it is confirmed that acetonitrile was as extract liquid,PSA was as extraction and purification of adsorbent,ethyl acetate was used for constant volune after whirlpool,centrifugal and nitrogen blow enrichment.The samples were purified by online GPC technology,and the detection sensitivity was improved by PTV bulk sample and injection process heats up.The Recovery rate of the method was 75％-109％,and the relative standard deviation was 3.1％-9.4％.Finally the dynamic equations of pentazolol were obtained by field dynamic test,and the half-life of the apple was 13.9 d.[Conclusion] The method had low detection limit and high precision,can satisfy the demand of pesticide residue analysis,so it can be used for determine tebuconazolein in apple and soil.关键词
QuEChERS/GPC-GC/MS/戊唑醇/残留/苹果/土壤/消解动态Key words
QuEChERS/GPC-GC/MS/Tebuconazole/Residue/Apple/Soil/Degradation analysis分类
农业科技引用本文复制引用
罗雪婷,吴迪,潘洪吉,张宝常,王艳辉,张希跃,矫健..戊唑醇在苹果和土壤中的残留及消解规律研究[J].安徽农业科学,2018,46(3):140-144,5.
