气相色谱法测定圆茄子中氟啶脲

Determination of chlorfluazuron residue in eggplant by gas chromatography

中文关键词:  氟啶脲  圆茄子  气相色谱法

英文关键词:chlorfluazuron  eggplant  gas chromatography

中文摘要:

      目的 建立圆茄子中氟啶脲农残分析方法。方法 采用乙腈提取圆茄子中的氟啶脲, 用弗罗里硅柱、石墨炭黑氨基串联柱分别对样品进行净化, 利用毛细管柱气相色谱法作为检测手段, GC-ECD 进行定性定量分析。结果 氟啶脲经过石墨炭黑氨基串联柱回收率在82.38%?93.81%, 变异系数是5.31%?6.76%, 最低检出限为0.001 mg?kg?1。氟啶脲经过弗罗里硅柱回收率在101.07%?122.04%, 变异系数4.29%?7.78%。结论 圆茄子中氟啶脲的残留检测操作简单, 灵敏度高, 添加回收率理想。

英文摘要:

      Objective To establish a method for determination of chlorfluazuron pesticide in eggplant. Methods Samples were extracted with acetonitrile, purified by Florisil column and Graphite carbon amino columns, respectively, and detected by capillary column gas chromatography with ECD as detector. Results Recoveries of chlorfluazuron by Graphite carbon amino columns were 82.38%?93.81% with coefficient of variation of 5.31%?6.67%. The lowest detection limit was 0.001 mg?kg?1. Recoveries of chlorfluazuron by Florisil column were 101.07%?122.04% with coefficient of variation of 4.29%?7.78%. Conclusion This method is simple, sensitive, accurate and reproducible, and the separation of chlorfluazuron is very satisfactory. This method can be used to detect residues of chlorfluazuron in eggplant.