欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (3): 238-241.

所属专题： 园艺

• 植物保护 农药 • 上一篇    下一篇

固相萃取-高效薄层色谱测定茶叶中甲氰菊酯和溴氰菊酯残留

樊玮1,汤锋2,岳永德2   

  • 收稿日期:2009-11-16 修回日期:2009-09-13 出版日期:2010-02-05 发布日期:2010-02-05

Determination of Fenpropathrin and Deltamethrin Residues in Tea by High-Performance Thin-Layer Chromatography with Solid Phase Extraction

  • Received:2009-11-16 Revised:2009-09-13 Online:2010-02-05 Published:2010-02-05

PDF (PC)

820

摘要：

本文建立了简便快速测定茶叶中甲氰菊酯和溴氰菊酯残留的固相萃取-高效薄层色谱分析方法。以乙腈为提取剂， 活性炭固相萃取柱和中性氧化铝固相萃取柱串联净化，高效薄层色谱检测。 结果表明，在给定色谱条件下甲氰菊酯（Rf= 0.49 ）和溴氰菊酯（Rf=0.64）的最小检测限分别为20.0ng和10.0ng。 茶叶中甲氰菊酯和溴氰菊酯的添加回收率为94.8-108% 和90.5-102%（添加浓度0.50-10.0 mg/kg），相对标准偏差为1.71-6.22% 和3.82-6.39%。 本文所建立方法的准确性、精确性均满足农药残留分析的要求。

Abstract:

A simple and rapid method was developed for determining fenpropathrin and deltamethrin in tea. Pesticides were extracted with acetonitrile and cleaned up by solid phase extraction, detected by high-performance thin-layer chromatography. The results indicated that the detection limits of fenpropathrin (Rf=0.49) and deltamethrin (Rf=0.64) were 20ng and 10 ng, respectively. Recoveries of fenpropathrin and deltamethrin in tea with this analytical method (the concentrations of fenpropathrin and deltamethrin fortified were 0.50~10.0 mg/kg) were 94.8-108% and 90.5-102% respectively. The RSDs were 1.71-6.22% and 3.82-6.39 %, respectively. The precision and accuracy of this method were generally fit for analysis of fenpropathrin and deltamethrin residues in tea.