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本文针对Fe(OH)_3胶体电泳实验中存在的问题,通过电极反应产物对Fe(OH)_3胶体电泳实验的影响的理论分析及试验,解释了负极颜色变深而正极颜色变浅,负极易聚沉;电导率很大时,U型电泳管正极下降比负极上升快,电导率很小时,结果与上正好相反的原因。并提出当温度在10摄氏度以下、电压在30-40V、辅助电解质为胶体的渗晰液,且其电导率在300μs/cm时,电泳在40分钟内不聚沉。胶体界面清晰,胶体界面颜色变化不明显;负极上升和正极下降距离接近。
In this paper, the problem of Fe (OH) 3 gel electrophoresis experiment, the electrode reaction product of Fe (OH) _3 gel electrophoresis experiments theoretical analysis and test, explained the anode color becomes darker and the cathode color becomes lighter, the anode Easy to gather Shen; conductivity is very large, U-shaped electrophoresis tube positive drop faster than the negative rise, the conductivity is small, the result is exactly the opposite reason. And proposed that when the temperature is below 10 degrees Celsius, the voltage is 30-40V, the auxiliary electrolyte is colloid liquid, and the conductivity is 300μs / cm, the electrophoresis does not coagulate within 40 minutes. Colloidal interface is clear, colloidal interface color change is not obvious; negative ascent and cathode descent distance close.