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Construcción de un electrodo selectivo a cimetidina

Authors: M Troconis; Jorge Palmar; Lisbeth Rolon; L Araujo; A Prieto; I Piña;

Construcción de un electrodo selectivo a cimetidina

Abstract

En este trabajo, se construyó y evaluó la respuestaelectroquímica de un electrodo de membran aheterogénea selectivo a cimetidina incorporando un complejo de par iónicocimetidina - ácidofosfotúngstico (CMT-AFT) como material electroactivo, dibutilftalato (DBP) comoplastificante y policloruro de vinilo (PVC) comosoporte. Se optimizaron los parámetros que afectan el funcionamiento del electrodo, tales como: composición de la membrana, concentración de la disolución interna y pH. El electrodo mostró una respuesta rápida y estable con un intervalo lineal desde 1,00x10-4 hasta 1,00x10-1 M encimetidina al serutilizadoen un rango de pH entre 2,73 – 5,00 unidades, unapendiente de 56,63 ± 0,06 mV pordécada y un límite de detección de 3,98x10-5 M a 25,00 ± 1,00 ° C. El electrodoexhibióunabuenaselectividad para la cimetidina con respecto a un número de ionesinorgánicoscomunes. El electrodo de membranafueaplicadoen la determinación de cimetidina en formulacione sfarmacéuticas mediante potenciometría directa obteniéndose resultados que no difieren significativamente con los declarados por las empresasfarmacéuticas.

Keywords

Cimetidina, electrodo selectivo, membrana heterogénea, T1-995, TA1-2040, Engineering (General). Civil engineering (General), potenciometría directa., Technology (General)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold