Lu, Jing Separation of Berberine Hydrochloride and Tetrahydropalmatine and Their Quantitative Analysis with Thin Layer Chromatography Involved with Ionic Liquids. [electronic resource] - Journal of analytical methods in chemistry 2015 - 642401 p. digital Publication Type: Journal Article ISSN: 2090-8865 Standard No.: 10.1155/2015/642401 doi