液-液萃取(LLE)是一种传统的样品前处理技术，报道目前有70%的有关文献采用液-液萃取作为样品前处理方式。
Liquid-Liquid Extraction (LLE) is a kind of tradition sample pretreatment method. There are 70 percent of documents which adopt Liquid-Liquid Extraction as a way of sample pretreatment.
建立了7%右旋苯氰菊酯杀虫烟雾剂的超声萃取前处理方法和气相色谱分析方法。
A method was established for determination of a 7% d-cyphenothrin insecticidal aerosol using an ultrasound extraction pretreatment followed by gas chromatography (GC).
采用衍生化—萃取法处理含糖样品，毛细管气相色谱测定糖的方法，测定了椰子壳水解液中糖的含量。
The sugar content in the hydrolysate of cocoanut shell is determined by treating samples containing sugar with derivatization extraction method and capillary gas chromatography.
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