| Autor: |
Khalid Mahmoud Hassan, Seleem Elsaid Gaber, Mahmoud Fatehy Altahan, Magdi Abdel Azzem |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Sensing and Bio-Sensing Research, Vol 29, Iss , Pp 100369- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2214-1804 |
| DOI: |
10.1016/j.sbsr.2020.100369 |
| Popis: |
In this work, bimetallic film of mercury and bismuth (Hg-Bi) was incorporated with poly(1,2-diaminoanthraquinone)/glassy carbon electrode (PDAAQ/GC) using applied potential method. The obtained Hg-Bi/PDAAQ/GC electrode was characterized by square wave voltammetry (SWV), scanning electron microscope (SEM) and energy dispersive X-ray (EDX) techniques. The proposed electrode had been used as a highly sensitive sensor for both single and simultaneous determination of lead (Pb2+), cadmium (Cd2+) and zinc (Zn2+) ions in acetate buffer solution by anodic stripping voltammetry (ASV). The adopted ASV method was achieved by optimizing different parameters such as metal deposition method (either in-situ or ex-situ), metals pre-concentration potential, pre-concentration time and different pH of values for acetate buffer solution. The prepared sensor provided a good reproducible response, high sensitivity with a linear range of 0.0–50.0 μg/L for Cd2+ and Zn2+ with a low detection limit of 0.107 and 0.037 μg/L, respectively. The linear range of Pb2+ was 10.0–120.0 ng/L with a detection limit of 3.18 ng/L. Also, the sensor was used for the analysis of the analytes in water samples with satisfactory results in comparison with inductively coupled plasma – mass spectroscopy (ICP-MS). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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