篇名 | 以氣相層析儀附電子捕獲檢測器分析甘蔗中得拉本殘留量 |
---|---|
卷期 | 12:3 |
並列篇名 | Determination of Residual Dalapon in Sugarcane by Gas Chromatography Equipped with Electron Capture Detector (GC-ECD) |
作者 | 曾素香 、 林育如 、 張碧秋 、 周薰修 、 張鴻民 |
頁次 | 238-243 |
關鍵字 | 氣相層析法 、 電子捕獲檢出器 、 得拉本 、 農藥 、 酯化反應 、 Pesticide 、 Dalapon 、 Esterification reaction 、 Gas chromatography 、 Electron capture detector 、 MEDLINE 、 Scopus 、 SCIE |
出刊日期 | 200409 |
A gas chromatographic method using an electron capture detector (GC-ECD) was developed for the determination of residual dalapon, esterified with methanol in sulfuric acid, in sugarcane. Dalapon in plant matrix was initially extracted with sulfuric acid solution, followed by partition extraction with diethyl ether in the presence of NaCl and esterification with 10% H2SO4 methanolic for GC-ECD analysis. Recovery of dalapon (0.05~0.20 ppm) spiked in sugarcane samples was carried out to obtain an average recovery of 89.7~109.4% with a coefficient of variation (CV) of 1.0~9.3% and a method detection limit (MDL) of 0.01 ppm. Peak of dalapon methyl ester was further identified by a GC-MS spectrum. The developed procedure was simple and the reagents used were slightly toxic, thus suitable for the accurate quantification of dalapon residues in crops.