摘要
用差示扫描量热法（DSC）和热重-微分热重法（TG-DTG）对静态空气气氛的乌索酸进行了热分析研究,为热分析鉴别乌索酸提供了实验依据。结果表明,加热到251℃时质量损失约3.31%,251～341℃时质量损失约68.09%,341～464℃时质量损失约27.70%,到464℃时质量仅余约0.90%。在158、311、415℃分别有3个放热峰。
The thermal properties of ursolic acid in Sambucus Chinensis Lindl. were studied by a DSC method and a TG-DTG method in the static air. It provides experimental evidence for thermoanalysis in identification of ursolic acid. The results show that heating up to 251℃, a mass loss of 3.31% is observed. From 251 - 341℃, a mass loss of 60.09% is observed. From 341 - 464 ℃, a mass loss of 27.70% is observed. Up to 464℃, the mass of remains is only 0.90%. The max peaks at 158, 311 and 415 ℃ in DTG are observed by exothennic decomposed reaction, respectively.
出处
《分析试验室》
CAS
CSCD
北大核心
2007年第11期29-31,共3页
Chinese Journal of Analysis Laboratory
基金
国家"863"计划重点(2002AA2Z3217)
江西省高校重点实验室科技计划(赣教技字[2005]301号)项目资助
