CONSTRUCTION OF A POLYMERIC LIQUID-MEMBRANE ION-SELECTIVE ELECTRODE (ISE)AND ITS APPLICATION FOR DETERMINATION OF NITRATE IN TOMATOES

Perez, MDA; Nodarse, IC; Yazdani-Pedram, M

Abstract

A potentiometric all-solid-state type ion-selective electrode (ISE) for NO3- was constructed and characterized. It is based on a mixture of tetra-decyl-ammonium nitrate (TDAN) as ionophore, di-butyl phthalate (DBP) as plasticizer and poly (vinyl chloride) (PVC) as matrix. Nitrate concentrations in tomatoes samples, randomly collected from central market at Santiago de Cuba, were determined using the described ISE by standard addition potentiometry. Spectrophotometric determinations using Brucine were performed as comparative method. Accurate and precise results were obtained. Accordingly, an analytical procedure for NO3- determination in tomatoes using the constructed ISE could be formulated

Más información

Título según WOS: Construction of a polymeric liquid-membrane ion-selective electrode (ISE)and its application for determination of nitrate in tomatoes
Título según SCOPUS: Construction of a polymeric liquid-membrane ion-selective electrode (ISE) and its application for determination of nitrate in tomatoes
Título según SCIELO: CONSTRUCTION OF A POLYMERIC LIQUID-MEMBRANE ION-SELECTIVE ELECTRODE (ISE)AND ITS APPLICATION FOR DETERMINATION OF NITRATE IN TOMATOES
Título de la Revista: Journal of the Chilean Chemical Society
Volumen: 49
Número: 1
Editorial: SOC CHILENA QUIMICA
Fecha de publicación: 2004
Página de inicio: 31
Página final: 34
Idioma: English
DOI:

10.4067/S0717-97072004000100006

Notas: ISI, SCIELO, SCOPUS