摘要
以聚乙二醇(PEG)-硫酸铵双水相体系为研究内容,介绍了一个具有趣味性和研究型的物理化学设计实验。采用"浊点"滴定法,绘制出PEG-(NH4)2SO4-H2O双水相体系三组分相图,并对该体系萃取性实验进行了设计。教学实践表明,该实验激发了学生学习探索的积极性,达到了理想的教学目标。
An interesting physical chemistry experiment was reported,which studied the Polyethylene Glycol（PEG）-Ammonium Sulphate Aqueous Biphasic System.Using the ＂cloud point＂ titration,the three-component phase diagram of PEG-（NH4）2SO4-H2O aqueous biphasic system was described,and the extraction capability of the system was researched.The teaching results showed that students＇ learning enthusiasm and initiatives were aroused,and achieved the ideal teaching goal.
出处
《广州化工》
CAS
2011年第21期198-199,201,共3页
GuangZhou Chemical Industry
关键词
双水相体系
相图
萃取
aqueous biphasic system
phase diagram
extraction
