Relationships between concentrations of sodium, potassium, and chlorine in unsalted foods

Helmke, P. A.; Ney, Denise M.

doi:10.1021/jf00021a015

Cited by 6 publications

(1 citation statement)

References 7 publications

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“…The consumption of these beverages has increased in the last decade, not only by athletes, but also by children and adolescents 9 . Their basic composition is of sugars and salts [10][11][12] , which the salt combination replaces the electrolytes that are eliminated through sweat, namely, chloride, potassium, sodium, magnesium and calcium 13 . The concentration of these electrolytes in the beverage must supply an osmotic pressure similar to that observed in blood 13 , thus it is very important to check the concentration of electrolytes such as chloride and potassium in carbohydrate-electrolyte beverages.…”

Section: Introductionmentioning

confidence: 99%

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

Fernandes¹,

Neto²,

Rohwedder³

et al. 2000

J. Braz. Chem. Soc.

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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.

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