Influence of decyl alcohol on the potentiometric behavior of three p-alkylbenzenesulfonate ion-selective electrodes
Author
dc.contributor.author
Cabrera, Walton J.
Author
dc.contributor.author
Urzúa Acevedo, Marcela
Author
dc.contributor.author
Rios Peña Lillo, Hernán
Admission date
dc.date.accessioned
2018-12-20T14:10:53Z
Available date
dc.date.available
2018-12-20T14:10:53Z
Publication date
dc.date.issued
2005
Cita de ítem
dc.identifier.citation
Journal of Colloid and Interface Science 288 (2005) 517–520
Identifier
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00219797
Identifier
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10.1016/j.jcis.2005.03.011
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/154470
Abstract
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The influence of decyl alcohol on the potentiometric response of three para-alkylbenzenesulfonate (p-RBS) electrodes is analyzed. The results are clearly dependent on the membrane surface polarity due to the presence of the alcohol. The ionophore was the complex trioctylmethylammonium-p-RBS, (TOMA +)-p-RBS-, with R=H, CH3, and C 2H5. The nature of the complex plays a fundamental role on the potentiometric behavior of the electrode showing that the more hydrophobic the complex, the better the potentiometric responses. Moreover, the electrodes selectivities for several hydrophilic and hydrophobic interfering anions were determined. The potentiometric results with interfering anions were coherent with the Pearson's hard and soft acid-base character of these anions