何首乌用70%甲醇超声提取浓缩后，用氯仿萃取分离出游离和结合型蒽醌，得到定量用试液。

Using 70% methanol, the Polygonum multiforum extract was concentrated by ultrasonic method . Then concentrated extract was leached with chloroform and separated into free and bound anthraquinones.

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研究了提取浓缩和毛细管电泳相结合测定稻田土壤中低剂量多个磺酰脲类除草剂混合残留的分析方法。

A low level multi sulfonylurea herbicides residue analytical method based on extraction enrichment combined with capillary electrophoresis was studied.

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前处理模块：实现样品提取、浓缩、净化一体化，每次可处理六个样品。

In the pre-processing module: realization of sample extraction, concentration, purification integration, each can process six samples.

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