Methods the chemical compositions of the petroleum ether extracts were isolated and purified by chromatographic methods. The structure of acquired compounds was identified by spectrum method.
方法采用多种色谱方法对其含有的化合物进行分离纯化，利用波谱法对得到的化合物进行结构鉴定。
2
Commercially available sodium lauryl sulfate was purified by such methods as recrystallization of water, recrystallization of ethanol and extraction of ethyl ether.