何当奇
第1楼2007/10/11
[quote]原文由 78787878 发表:取本品5G,置于索氏提取器中,加入30~40ML乙醇,回流提取6小时,适当回收乙醇,将溶液定容转入10ML容量瓶中,摇匀,作为供试品溶液.
吸附剂:硅胶G板-CMC薄层板
点样量:吸取各5UL
展开剂:氯仿-乙醇-水 50:30:10
显色剂:10%乙醇硫酸溶液
Weigh accurately about 5g ( of sample) ,into (Soxhlet's apparatus), add 30~40ml of ethanol solution, reflux for 6 hour, collect the ethanol, transfer to the volumetric flask ( 100ml), make up to volume, shake well.