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《Chinese Journal of Pharmaceutical Analysis》 1998-06
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RP-HPLC Determination of Emodin in Radix Polygoni Multiflori Preparata and Four Kinds of Related Chinese Patent Medicines

Liu Sankang,Qian Guangsheng and Li Zhangwan (School of Pharmacy,West China University of Medical Sciences,Chengdu,610041)  
A RP-HPLC method has been developed to determine the emodin in Radix Polygoni Multiflori Preparata and four kinds of related Chinese patent medicines containing Radix Polygoni Multiflori Preparata,using a Shimpack CLC-ODS column with a mobile phase of methanol-0 2 mol/L NaH 2PO 4(80∶20,adjust to pH 3 0 with H 3PO 4)at a flow rate of 1 mL/min and a UV detector at 289 nm.After hydrolysized in acidic medium,the total emodin of the samples are extracted from the hydrolysates with ether and determined by the RP-HPLC method.The linear range of emodin is 32 8~410 ng,the mean recovery is 97 83 %.
【CateGory Index】: R284
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