Simultaneous quantification of ascorbic acid, uric acid and nitrite using a clay/porphyrin modified electrode

- Preparation of clay-iron(III) porphyrin composite.
- Use of clay-porphyrin film modified electrode for electrooxidation of ascorbic acid, uric acid and nitrite ion.
- Separating the oxidation potential of ascorbic and uric acid via pH control.
- Selective and sensitive determination of ascorbic acid, uric acid and nitrite ion.