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EGCG在Tween 80胶束体系中的性质
胶束 儿茶素没食子酸酯 萃取 Tween 80
2010/3/9
通过离子萃取技术, 从黄山绿茶中提取高纯度儿茶素没食子酸酯(EGCG). 在Tween 80/EGCG/H2O体系中, 随着EGCG浓度增加, Tween 80临界胶束浓度和胶束动力学半径增大; 随着Tween 80浓度增加, EGCG和Tween 80扩散系数减小, 而EGCG的紫外-可见吸收光强度和荧光强度增加. 对EGCG在Tween 80胶束中的定位也进行了讨论.
First- and Second-Derivative Spectrophotometry for Simultaneous Determination of Copper and Cobalt by 1-(2-Pyridylazo)-2-naphthol in Tween 80 Micellar Solutions
Copper Cobalt PAN Simultaneous Derivative spectrophotometry
2010/4/19
1-(2-Pyridylazo)-2-naphthol (PAN) has been used for the simultaneous determination of copper and cobalt at trace levels. PAN at pH 1.89 forms red and green complexes with copper and cobalt, respective...