Methods The qualitative analysis of piceid and emodin are taken by TLC, and content of emodin was determined by TLCS and HPLC.

• 方法采用薄层色谱法对炮制品中白藜芦醇苷和大黄素进行定性分析,并采用薄层扫谱法和HPLC法对大黄素进行定量分析。