水杨酸及其盐类是一种很重要的药物和化学药品。在医学上,化学工业及实验室中用途较广。国内现一般采用容量滴定法或比色法,其手续繁琐费时。离子选择电极目前已广泛应用于药物及其它化学分析领域中,国外也有关于水杨酸及对氨基水杨酸药物离子选择电极的报导。但它仅局限于液膜型的,且未提及电极的应用。我们用三辛基十二烷基碘化季铵—水杨酸离子缔合物为电活性物质,研制了水杨酸 Salicylic acid and its salts are a very important drug and chemical. In medicine, the chemical industry and laboratory use more widely. China is generally the use of volumetric titration or colorimetric method, the procedure cumbersome and time-consuming. Ion selective electrode has been widely used in the field of pharmaceuticals and other chemical analysis. There are also reports about salicylic acid and p-aminosalicylic acid ion selective electrodes in foreign countries. However, it is limited to the liquid film type, and no mention is made of the use of electrodes. We use trioctyl dodecyl quaternary ammonium salicylate ion association compounds as electroactive substances, developed a salicylic acid