Simultaneous quantitative determination of 20 active components in the traditional Chinese medicine formula Zhi‐Zi‐Da‐Huang decoction by liquid chromatography coupled with mass spectrometry: application to study the chemical composition variations in different combinations
1. School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China;2. School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China;3. School of Pharmacy, Jilin Medical College, Jilin, China