Novel Ce-incorporated zeolite modified-carbon paste electrode for simultaneous trace electroanalysis of lead and cadmium
| Autor: | A.H. Ismail, Abdel-Nasser Kawde, Oki Muraza, A.R. Al-Betar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Cadmium
Working electrode Supporting electrolyte Inorganic chemistry Absolute electrode potential chemistry.chemical_element 02 engineering and technology General Chemistry Square wave 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Carbon paste electrode Anodic stripping voltammetry chemistry Mechanics of Materials Electrode General Materials Science 0210 nano-technology |
| Zdroj: | Microporous and Mesoporous Materials. 243:1-8 |
| ISSN: | 1387-1811 |
| DOI: | 10.1016/j.micromeso.2017.02.008 |
| Popis: | Cerium incorporated zeolite-modified carbon paste electrode (Ce-ZCPME) was studied for the anodic stripping voltammetric detection of lead and cadmium ions. The modified electrode which was fabricated in-house by a prior hydrothermal synthesis of Ce-impregnated zeolite displayed satisfactory results compared to other reported electrodes. Deposition of the metal was achieved at a potential of −1.2 V (vs. Ag/AgCl) for 120 s followed by a square wave stripping scan from −1.6–0.0 V. Various experimental conditions which include nature of supporting electrolyte, pH, amplitude, frequency, deposition potential and deposition time were optimized prior to the analyses. The fabricated electrode revealed a linear behavior over the metal ion concentrations with a LOD (S/N = 3) of 0.07 ppb and 0.46 ppb for lead and cadmium detection, as well as a good reproducibility (RSD 2.23%) respectively. The fabricated electrode has the potential to be used in the analysis of environmental samples due to its lack of toxicity, ease of fabrication and relative inexpensiveness. |
| Databáze: | OpenAIRE |
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