【摘要】 以四苯硼钠-尿酸的缔合物为活性物质,制备了适合酸性范围内使用的PVC膜pH电极。此电极在pH1.0～7.0的范围内,对氢离子呈现很好的能斯特响应,电极斜率为50.5mV/pH。实验表明该电极具有良好的稳定性、重现性,将其用于饮料、自来水、人造尿液的测定,获得了满意结果。更多还原

【Abstract】 PVC membrane pH electrode was prepared using sodium tetraphenylborateuric acid ion pair as electroactive material and used in acidic condition. This electrode showed Nernstian response to H+ over the pH range of 1.0~7.0 with a slope of 50.5 mV/pH. Experiments indicated that the electrode has fair stability and reproducibility. It was successfully applied to the determination of beverage、tap water and artificial urine and satisfying results were attained.更多还原