由于带电的胶粒与分散介质间存在电位差,所以在外加电场的作用下,带电的胶粒与介质之间会发生相对运动,胶粒向正极或负极移动的现象叫电泳,而这实验中一般以液态胶体进行电泳实验,但存在界面不清晰的现象,且一旦实验停止通电,阴阳极界面差就消失。为了解决这个问题,把溶胶加入琼脂制成固态溶胶,而琼脂易导电,这样做同样实验,能得到界面清晰,易于尺量阴阳极界面差,面且实验结束后 Due to the potential difference between the charged colloidal particles and the dispersion medium, the relative movement between the charged colloidal particles and the medium occurs under the action of the applied electric field, and the phenomenon that the colloidal particles move to the positive or negative electrode is called electrophoresis. In this experiment, Electrophoresis experiments are generally carried out using liquid colloids, but there is a phenomenon that the interface is not clear. Once the experiment is stopped, the difference between the cathode and the anode disappears. In order to solve this problem, the sol was added to the agar to make a solid sol, and the agar was easy to conduct electricity. In the same experiment, the interface was clear, and the anode-anode interface was easy to measure.