Objective ：To establish the quality standard of Tonghianling Capsules. Methods：Tongbianling Capsules were identified by thin layer chromatography using Senna Leaf and Chinese Angelica as reference substances. The contents were determined by high performance liquid chromatography. Results：The average recovery of Rhein was 97.16% ,and RSD was 2.23% （n = 6）. Thin layer chromatograph spots were clear. The negative sample had no interference. The Specificity was good. Conclusion： This method is accurate, and it has good repeatability and could be used for the quality control of this preparation.
Journal of Anhui Traditional Chinese Medical College
High performance liquid chromatography