Characterization of a Silver Modified PVCAc Electrode and Its Application as a Ag(I)-Selective Potentiometric Sensor
✍ Scribed by D. M. Sejmanović; B. B. Petković; M. V. Budimir; S. P. Sovilj; V. M. Jovanović
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 234 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1040-0397
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✦ Synopsis
Abstract
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 AgNO~3~ solution. The response of the electrode was linear with a Nernstian slope of 60.25 mV/decade within the concentration range from 1×10^−1^ to 1×10^−5^ M and with a detection limit of 4.25×10^−6^ M. The stability as an effect of various cations was defined. The electrode is suitable for use in high acidic solutions (pH<1 to 7) and has successfully been applied for the determination of silver(I) concentrations in different samples.