Simultaneous determination of chloride and potassium in carbohydrate electrolyte beverages using an array of ion-selective electrodes controlled by amicrocomputer

This work describes the building of a potentiometric system composed of an array of ion-selective electrodes and controlled by microcomputer. The syst em employed an acquisition card model ACL-8111 from ADLink Technology for t he selection control of the ion-selective electrodes through an analogic sw itch (ADG201) with simultaneous data acquisition. Software implemented on t he VISUAL BASIC 4.0 language was employed for electrode control and data ac quisition. This system was evaluated in the simultaneous determination of c hloride and potassium in samples of carbohydrate-electrolyte beverages. The results obtained for these determinations were in agreement with those obt ained by the reference method taking into account the estimated error in th e determinations.