摘要
吡虫啉和啶虫脒是茶叶上使用较多的杀虫剂,为探索同时检测两种杀虫剂在茶叶中的残留方法,采用PSA作吸附剂净化提取液,对PSA用量进行优化,然后用高效液相色谱对提取液进行分析。结果表明:用20 mg/mL PSA对提取液进行2次净化即可除去影响色谱分析的杂质,提取液用液相色谱分析方法的各项效能指标结果均达试验要求,具有良好的回收率和精密度,该方法具有简便、容易操作和成本低的特点,适用于日常检验。
The extract of imidacloprid and acetamiprid purified by PSA was detected by HPLC to determine imidacloprid and acetamiprid residue in tea simultaneously.The results showed that 20mg/mL PSA could remove the impurity affecting chromatographic analysis in the extract after two purifications and the function indexes of the extract analyzed by HPLC all reached test demands.The PSA method with good recovery,high accuracy,conveniency easy operation and low cost can be used in routine inspection of tea.
出处
《贵州农业科学》
CAS
北大核心
2011年第4期130-133,共4页
Guizhou Agricultural Sciences
基金
贵州省农业科学院专项"防治茶小绿叶蝉的农药残留控制技术研究"[院ZX(2007)057]
贵州省农业攻关项目"茶树重要病虫害无公害防除技术研究与推广"[黔科合NY字(2010)3026]
关键词
高效液相色谱法
吡虫啉
啶虫脒
PSA
茶叶
残留
High Performance Liquid Chromatography
imidacloprid
acetamiprid
PSA
tea
residue
