CONSTRUCTION OF A POLYMERIC LIQUID-MEMBRANE ION-SELECTIVE ELECTRODE (ISE)AND ITS APPLICATION FOR DETERMINATION OF NITRATE IN TOMATOES
| Autor: | Isel Cortes Nodarse, María de los Ángeles Arada Pérez, Mehrdad Yazdani-Pedram |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Chromatography
Brucine ion-selective electrode (ISE) poly(vinyl chloride) Chemistry nitrate tetra-decyl-ammonium nitrate Potentiometric titration Ionophore General Chemistry plasticizer Vinyl chloride Ion selective electrode Matrix (chemical analysis) chemistry.chemical_compound liquid membranes Nitrate Standard addition |
| Zdroj: | Journal of the Chilean Chemical Society, Volume: 49, Issue: 1, Pages: 31-34, Published: MAR 2004 Journal of the Chilean Chemical Society v.49 n.1 2004 SciELO Chile CONICYT Chile instacron:CONICYT |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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