ANION SELECTIVE ELECTRODE WITH MANGANESE PORPHYRIN COMPLEX AS SENSITIVE SUBSTANCE

摘要

PURPOSE: To measure chlorine ion with an improved selectivity quickly and stably especially under severe conditions of serum for a long time by forming a film material using a sensitive substance of porphyrin complex with manganese as a central metal. ;CONSTITUTION: Tetraxysphenylporphyrinmanganese complex, nitrophenyloxchileter plasticizer, and polyvinylchloride support material are melted in ratrahydrofuran to create a film material. The film material is applied to the tip surface of an internal electrode 1 where silver chloride is coated on, for example, silver surface to form a sensitive film 3. A part where no film material is applied to is covered with a body 4 and a cap 5 where a lead wire is inserted is placed on the tip of the body 4. When measuring chlorine ion concentration using it, potential is reduced by approximately 60mV when ion concentration becomes ten times larger, thus achieving a high-sensitivity detection. Further, according to the load test of an electrode using control serum, no serum protein is adhered, thus achieving a stable measurement for a long time.;COPYRIGHT: (C)1995,JPO