The samples were extracted by liquid-liquid extraction method.

以尼莫地平为内标，样品采用液-液萃取。

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.

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。

Two extraction methods have been studied: liquid - liquid extraction and immersion solid - phase microextraction.

对比研究了液 - 液萃取和浸渍式固相微萃取方法对葡萄酒中香气成分的萃取特点.

Liquid - liquid extraction technique is used in the capillary GC determination of PCBs in peanut oil.

采用液 - 液萃取技术提取花生油中微量多氯联苯,用毛细管柱气相色谱法进行测定.

Test is complete, do not need to replace the container out, through liquid-liquid extraction and concentration to complete the clean up.

试验完成以后，不需要将容器移出替换，可以通过液液抽出和浓缩来完成清理。