高中化学胶体电泳的实验,我们采用了下述方法,效果较好,且实验操作简便,一般中学都可以做好。操作方法及步骤: 一、Fe(OH)_3溶胶的制备在烧杯中加入蒸馏水50ml,加热至沸。在不断搅拌中缓缓滴入饱和FeCl_3溶液6滴左右,继续煮沸,待溶液呈红棕色(澄清、透明)时停止加热。冷却后即得到Fe(OH),溶胶。为了增加Fe(OH),溶胶的密度,可在溶胶中加入2克蔗糖。 In the high school chemical gel electrophoresis experiment, we used the following method, and the effect was good. The experiment was simple and easy to operate. Normal middle schools can all do well. Operation method and procedure: 1. Preparation of Fe(OH)3 sol Distilled water (50 ml) was added to a beaker and heated to boiling. Slowly add about 6 drops of saturated FeCl_3 solution while stirring, continue to boil, and stop heating when the solution is reddish brown (clear, transparent). After cooling, Fe(OH) and sol were obtained. In order to increase the density of Fe(OH) and sol, 2 grams of sucrose can be added to the sol.