亚行高三化学课本中蛋白质的盐桥实验，如按课本所述去做，几乎观察不到盐析现象。我对此实验加以改进，具体做法是：往2～3mL鸡蛋清液中搞加三～2滴2％左右醋酸溶液酸化，然后用小药匙逐渐加入研细的硫酸镇，加至振荡试管时硫酸铰不再溶解为止。稍静置，液体下层就出现明显的 The salt bridge experiment of protein in the textbook of ADB’s senior high school chemistry textbook, as described in textbooks, hardly observed salt precipitation. I have improved this experiment. The specific approach is to add 2-3 drops of 2% acetic acid solution to the 2 to 3 mL of egg white solution, and then gradually add the fine sulfuric acid town with a small spoon and add it to the shaking tube. Sulphuric acid hinge is no longer dissolved. After standing for a while, the lower layer of the liquid appears obvious