本文描述了Ag—AgCl固体电极的制作与结构,其机械强度大,电极内阻低(1～2kΩ)。试验结果表明,在八种不同土壤介质中,在室温(8～26°C)P,Ag—AgCl固体电极在埋土数天到二十余天后,其电位基本上保持稳定,最大波动不超过10mV。测定了Ag—AgCl固体电极在四种水饱和土壤介质中的稳态极化曲线。这些曲线指出,当这种固体电极与输入阻抗大于15MΩ的恒电位仪配合使用时,流经该电极的电流所引起的电极电位漂移可不超过10mV。 This paper describes the fabrication and structure of Ag-AgCl solid electrode with high mechanical strength and low internal resistance (1 ~ 2kΩ). The results showed that the potential of Ag-AgCl solid electrode remained stable at a maximum of 20 days after being buried for several days at room temperature (8 ~ 26 ° C) in eight different soil media, and the maximum fluctuation did not exceed 10mV. The steady-state polarization curves of Ag-AgCl solid electrode in four water saturated soil media were measured. These curves indicate that when this solid electrode is used in conjunction with a potentiostat having an input impedance greater than 15 MΩ, the electrode potential drift caused by the current flowing through the electrode may not exceed 10 mV.