purificationtechnology相关论文
Advance in studies on extraction and purification technology for effective parts of Penthorum chinen
From the effective substance basis,extraction and purification technology and other aspects,research on extraction and p......
讨论了生活用水的分类、用水标准和健康饮水等问题,对目前给水净化技术进行了综述和分析。在此基础上,从建立合适的水质标准体系、净......
通过石油醚提取、水解、萃取和柱层析等分离,制得银杏叶聚戊烯醇纯样,其化学结构由NMR、IR和MS鉴定为桦木聚戊烯醇,异戊烯基单元数......