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。通过对其进行特征分析,结果表明各样品的TG曲线形状基本一致,但由于各单体中的1,8-二羟基蒽醌上所带基团不同,有不同的失重情况;所有苷元的DTA曲线都有2个明显的特征峰,但其峰形、峰位置和大小有明显的区别,因此可以用热重-差热分析法来鉴定从大黄药材分离纯化的游离羟基蒽醌。
In comparison with those of 1,8-dihydric anthraquinones, the characteristic TG-DTA curves of the free anthraquinones （ Rhein, Emodin, mined. The results showed that they attached on the 1,8-dihydrox anthraqu Aloe-emodin, Chrysophanol and Physcion） from Rheum were deterhad similar TG curves. However, due to the different substituents inones, each sample had different weight loss. On the DTA curves of free anthraquinones, there are two obviously characteristic peaks, while there are obviously differences between their curve shapes, peak location and peak values, therefore, free anthraquinones distilled and sublimated from Rheum can be determined by TG-DTA.
出处
《应用化学》
CAS
CSCD
北大核心
2006年第9期1058-1060,共3页
Chinese Journal of Applied Chemistry
基金
天津市高等学校科技发展基金项目(20031210)
