A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample
This study presents a simple, low-cost, sensitive and environmentally friendly approach for the simultaneous electrochemical determination of lead and cadmium based on a commercial screen-printed gold electrode (SPGE) with Nafion and an in situ bismuth film. The developed sensor was coated with a Na...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Sensing and Bio-Sensing Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214180421000593 |
| _version_ | 1818398766318747648 |
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| author | Ibtihaj Albalawi Anna Hogan Hanan Alatawi Eric Moore |
| author_facet | Ibtihaj Albalawi Anna Hogan Hanan Alatawi Eric Moore |
| author_sort | Ibtihaj Albalawi |
| collection | DOAJ |
| description | This study presents a simple, low-cost, sensitive and environmentally friendly approach for the simultaneous electrochemical determination of lead and cadmium based on a commercial screen-printed gold electrode (SPGE) with Nafion and an in situ bismuth film. The developed sensor was coated with a Nafion polymer to reduce the interference and enhance the stability and reproducibility of the gold working electrode and an in situ bismuth film to increase the sensitivity and achieve a low detection limit. Electrochemical properties were investigated using anodic stripping square voltammetry. The composite film was characterized using cyclic voltammetry, and scanning electron microscopy was carried out for the morphological characterization of the modified electrode. It was found that the prepared electrode has high sensitivity and good repeatability with a limit of detection below the Environmental Protection Agency limits (5 µg/L Cd and 10 µg/L Pb). The linear calibration curves for Pb(II) ranged from 20 ppb to 300 ppb, and for Cd(II), they ranged from 50 ppb to 300 ppb. The detection limits (S/N = 3) were estimated to be 3 ppb for Pb(II) and 4 ppb for Cd(II). This method was effectively applied in the application of river and tap water samples, and the results were compared with flame-atomic absorption spectroscopy analysis. |
| first_indexed | 2024-12-14T07:10:00Z |
| format | Article |
| id | doaj.art-b6f0381b2f1e42c1b653a9d491fb8316 |
| institution | Directory Open Access Journal |
| issn | 2214-1804 |
| language | English |
| last_indexed | 2024-12-14T07:10:00Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensing and Bio-Sensing Research |
| spelling | doaj.art-b6f0381b2f1e42c1b653a9d491fb83162022-12-21T23:11:53ZengElsevierSensing and Bio-Sensing Research2214-18042021-12-0134100454A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sampleIbtihaj Albalawi0Anna Hogan1Hanan Alatawi2Eric Moore3Sensing and Separation Group, School of Chemistry, University College Cork, Cork, IrelandSensing and Separation Group, School of Chemistry, University College Cork, Cork, IrelandSensing and Separation Group, School of Chemistry, University College Cork, Cork, IrelandCorresponding author.; Sensing and Separation Group, School of Chemistry, University College Cork, Cork, IrelandThis study presents a simple, low-cost, sensitive and environmentally friendly approach for the simultaneous electrochemical determination of lead and cadmium based on a commercial screen-printed gold electrode (SPGE) with Nafion and an in situ bismuth film. The developed sensor was coated with a Nafion polymer to reduce the interference and enhance the stability and reproducibility of the gold working electrode and an in situ bismuth film to increase the sensitivity and achieve a low detection limit. Electrochemical properties were investigated using anodic stripping square voltammetry. The composite film was characterized using cyclic voltammetry, and scanning electron microscopy was carried out for the morphological characterization of the modified electrode. It was found that the prepared electrode has high sensitivity and good repeatability with a limit of detection below the Environmental Protection Agency limits (5 µg/L Cd and 10 µg/L Pb). The linear calibration curves for Pb(II) ranged from 20 ppb to 300 ppb, and for Cd(II), they ranged from 50 ppb to 300 ppb. The detection limits (S/N = 3) were estimated to be 3 ppb for Pb(II) and 4 ppb for Cd(II). This method was effectively applied in the application of river and tap water samples, and the results were compared with flame-atomic absorption spectroscopy analysis.http://www.sciencedirect.com/science/article/pii/S2214180421000593Anodic stripping voltammetryGold screen printed electrodeCadmium and lead detectionNafion-Bismuth |
| spellingShingle | Ibtihaj Albalawi Anna Hogan Hanan Alatawi Eric Moore A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample Sensing and Bio-Sensing Research Anodic stripping voltammetry Gold screen printed electrode Cadmium and lead detection Nafion-Bismuth |
| title | A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample |
| title_full | A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample |
| title_fullStr | A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample |
| title_full_unstemmed | A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample |
| title_short | A sensitive electrochemical analysis for cadmium and lead based on Nafion-Bismuth film in a water sample |
| title_sort | sensitive electrochemical analysis for cadmium and lead based on nafion bismuth film in a water sample |
| topic | Anodic stripping voltammetry Gold screen printed electrode Cadmium and lead detection Nafion-Bismuth |
| url | http://www.sciencedirect.com/science/article/pii/S2214180421000593 |
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