Selective Voltammetric Determination of Lead(II) on Partially Quaternized Poly(4-vinylpyridine)/Mercury Film Electrodes
✍ Scribed by Jyh-Myng Zen; Hsieh-Hsun Chung; Govindasamy Ilangovan
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 301 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1040-0397
No coin nor oath required. For personal study only.
✦ Synopsis
A partially quaternized poly(4-vinylpyridine) mercury ®lm electrode (QPVP/MFE) was developed for the determination of traces of Pb(II) in real samples by square-wave anodic stripping voltammetry. In this method, Pb(II) is converted into an anionic chloride complex and preconcentrated into the QPVPyMFE by applying a potential of À1.2 V (vs. AgyAgCl). Good solubility of lead in mercury subsequently helps to increase the preconcentration effect. Various factors in¯uencing the determination of Pb(II) were thoroughly investigated in this study. The main advantages of this method are a wide pH working range, good resistance to interference, easy detection without deoxygenating, and excellent electrode renewal. The analytical utility of the QPVP/MFE in the determination of Pb(II) is demonstrated by application to various water samples.