一种双固体树脂接界的参比电极的研究

Studies of a Ag/AgCl Reference Electrode based on the Double Solid Resin Junction

研究了一种双固体树脂接界的参比电极。该电极是由上下两部分固体树脂接界而成,上部树脂含Ag/AgCl丝及KCl粉末,下部树脂含KNO3粉末。本电极性能稳定,KCl从固体树脂向样品溶液的扩散速度小于6.25×10-7mol·h-1,能够被连续使用。

A double solid resin junction reference electrode has been developed. It was consisted of two solid resins which bordered on each other. The upper part of resin contained Ag/AgCl wire and KCl powder, and the lower part of resin contained KNO_(3) powder. It exhibited a rather good stability .The diffusion rates of K^(+) and Cl^(-) ion from the resin to sample solutions were less than 6.25×10^(-7) mol·h^(-1 ).It can be used continuously for 1 year and can be used as a reference electrode both in a ordinary sample solution and in a solution containing Ag^(+).