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

Abstract

Este trabalho descreve a elaboração de um sistema potenciométrico controlado por microcomputador para uso com um conjunto de eletrodos íon-seletivo. O sistema empregou uma placa de interface modelo ACL-8111 da ADLink Technology, para controlar a seleção dos eletrodos íon-seletivo, através de uma chave analógica (ADG201), com simultânea aquisição de dados. Um programa escrito na linguagem VISUAL BASIC 4.0 foi empregado para controle e aquisição de dado. Este sistema foi avaliado na determinação simultânea de cloreto e potássio em amostras de bebidas energéticas. Os resultados obtidos na análise destes íons foram concordantes com aqueles dos métodos de referência levando em consideração o erro estimado nas determinações.This work describes the building of a potentiometric system composed of an array of ion-selective electrodes and controlled by microcomputer. The system employed an acquisition card model ACL-8111 from ADLink Technology for the selection control of the ion-selective electrodes through an analogic switch (ADG201) with simultaneous data acquisition. Software implemented on the VI-SUAL BASIC 4.0 language was employed for electrode control and data acquisition. This system was evaluated in the simultaneous determination of chloride and potassium in samples of carbohydrateelectrolyte beverages. The results obtained for these determinations were in agreement with those obtained by the reference method taking into account the estimated error in the determinations.

Photophysical Properties of Intramolecular Charge Transfer in a Tribranched Donor–π–Acceptor Chromophore

“…The multiplexer is based on an acquisition card (model ACL‐8111 ADLink Technology) and an analogic switch (ADG201) with software written in VISUAL BASIC 4.0. Detailed architecture, schematics, and logical structure can be found in Reference 32.…”

Simultaneous determination of calcium and potassium in coconut water by a flow-injection method with tubular potentiometric sensors

“…The basic composition of coconut water replaces the electrolytes eliminated through sweat, such as: sodium, potassium, magnesium and calcium. The concentration of these electrolytes in this beverage, supplies an osmotic pressure similar to that observed in blood (Fernandes et al, 2000) in this way, it is very important to check the concentration of these electrolytes.…”

“…Software in VISUAL BASIC 4.0 was utilized for commutation of the electrodes. Both the computational system and the used software has been described in a previous work (Fernandes et al, 2000).…”

Alternative strategy for manufacturing of all-solid-state reference electrodes for potentiometry

“…Potentiometric cells with a pH single-rod measuring cell (HI-1131P model) or a homemade potassium ion selective electrode (ISE-K) were used for testing the allsolid-state reference electrodes in real samples for direct potentiometry. The ISE-K was prepared according to previous work (Fernandes et al, 2000).…”