其优点在于，在样品预处理中，采用简便的一次液-液萃取法对血清中氯霉 素进行净化和富集；
The method has the advantages that: in the sample pretreatment, a simple liquid-liquid extraction method is adopted to purify and enrich the chloramphenicol in the serum;
方法：采用紫外分光光度法测定黄芩苷含量，比较水提法与液-液连续萃取法对黄芩苷提取率的差别。
Methods:Liquid-liquid continuous biphasic extraction was compared with the one of the traditional method of aqueous extraction and acidic deposition, determining the contents of total flavone by UV.
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