Characterization of a Silver Modified PVCAc Electrode and Its Application as a Ag(I)-Selective Potentiometric Sensor
| Autor: | Sofija P. Sovilj, Branka Petković, Vladislava M. Jovanović, M. V. Budimir, D. M. Sejmanović |
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| Rok vydání: | 2011 |
| Předmět: |
Detection limit
Working electrode Materials science 010401 analytical chemistry Inorganic chemistry Ionophore Glassy carbon Modified polymer electrode 010402 general chemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry Quinhydrone electrode Silver-selective potentiometric sensors Saturated calomel electrode Electrode Poly(vinyl chloride-co-vinyl acetate) Electrochemistry Potentiometric sensor Coated glassy carbon rod |
| Zdroj: | Electroanalysis |
| Popis: | An all solid-state Ag(I) ion-selective electrode has been prepared by simply immersing a glassy carbon rod coated with PVCAc, which contained plasticizer and additive but no ionophore, into the AgNO3 solution. The response of the electrode was linear with a Nernstian slope of 60.25 mV/decade within the concentration range from 1 x 10(-1) to 1 x 10(-5) M and with a detection limit of 4.25 x 10(-6)M. The stability as an effect of various cations was defined. The electrode is suitable for use in high acidic solutions (pH LT 1 to 7) and has successfully been applied for the determination of silver(I) concentrations in different samples. |
| Databáze: | OpenAIRE |
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