In comparison with those of 1,8-dihydric anthraquinones, the characteristic TG-DTA curves of the free anthraquinones (Rhein, Emodin, Aloe-emodin, Chrysophanol and Physcion) from Rheum were determined.

• 摘要以1,8-二羟基蒽醌为对照，利用热重-差热分析仪对从大黄中分离纯化的游离羟基蒽醌（大黄酸、大黄素、芦荟大黄素、大黄素甲醚和大黄酚）进行了测定，得到这些样品的热分析图谱。