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本文以微孔细陶作为电极内充液的支撑材料,制备了简易参比电极一Pt/(I_3~-+I~-)电极。初步考察了Pt/(I_3~-+I~-)电极在水溶液及多种有育机溶剂中的稳定性,并与Ag/AgCl、甘汞电极进行比较。实验结果表明,Pt/(I_3~-+I~-)电毁不仅在介电常数较大的有机溶剂中有稳定电位,在某些介电常数较小的有机溶剂中也有稳定电位。在水溶液中其电位稳定性不亚于Ag/AgCl、甘汞电极,可用怍测水溶液 pH 值的参比电极。Pt/(I_3~-+I~-)电捉还具育结构简单容易制备等院点。
In this paper, a simple reference electrode-Pt / (I_3 ~ - + I ~ -) electrode was prepared by using microporous fine pottery as support material for electrode filling. The stability of Pt / (I_3 ~ - + I ~) electrode in aqueous solution and various organic solvent was investigated preliminarily and compared with Ag / AgCl and calomel electrode. Experimental results show that Pt / (I_3 ~ - + I ~ -) electrocution not only has a stable potential in organic solvents with larger dielectric constant, but also has stable potential in some organic solvents with smaller dielectric constants. Its potential stability in aqueous solution is no less than Ag / AgCl, calomel electrode, pH value can be used to measure the pH of the reference electrode. Pt / (I_3 ~ - + I ~ -) electricity to catch but also educate the structure is simple and easy to prepare and other hospital.