Synthesized f-MWCNTs/CS/PB for determination of manganese ($ Mn^{2+} $) in drinking water
In this research, the manganese ion ($ Mn^{2+} $) in drinking water was detected using functionalized multiwalled carbon nanotubes (f-MWCNTs) and chitosan (CS) immobilised with Prussian blue. Drinking water that contained soluble manganese ($ Mn^{2+} $) became insoluble ($ Mn^{3+} $ and $ Mn^{4+} $) when water phytochemistry changed as a result of unpredictably high manganese emissions from human activities into the environment. Manganese toxicity has been associated with brain disorders and metabolic activity. Electrochemical parameters such as (0.1 M, pH 2) phosphate buffer saline supported 5 mM Prussian blue, scan rate = 250 mV $ s^{−1} $, accumulation time = 20 s, and volume 10 $ cm^{3} $ were optimized using the cyclic voltammetry method. The f-MWCNTs/CS/PB generated highest current signal followed by PB/AuE and AuE. The stability of f-MWCNTs/CS/PB showed less than 7% for repeatability and reproducibility. Also, f-MWCNTs/CS/PB/AuE was selective towards $ Mn^{2+} $ with no inferring activity detected. However, this sensor can only be kept for 14 days due to the decreased current signals. Differential pulse voltammetry method was used to detect different amounts of $ Mn^{2+} $ ranging from 0.2 to 3 ppm under optimal conditions. The limit of detection (LOD) was found to be 2.60 × $ 10^{–6} $ M, with correlation coefficient (0.2–1 ppm) y = 0.0413x + 0.0734, with R2 = 0.9679. The percent recovery of a drinking water sample ranges from 94.87 to 100.4%. The modified electrode (f-MWCNTs/CS/PB/AuE) has various advantages for detecting $ Mn^{2+} $ in drinking water, including a simple procedure, less operating time, high sensitivity and selectivity. Graphical abstract.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:154 |
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| Enthalten in: |
Monatshefte für Chemie - 154(2023), 2 vom: 09. Jan., Seite 191-203 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ringgit, Gilbert [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Chitosan |
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| Anmerkungen: |
© Springer-Verlag GmbH Austria, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| doi: |
10.1007/s00706-022-03026-3 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a In this research, the manganese ion ($ Mn^{2+} $) in drinking water was detected using functionalized multiwalled carbon nanotubes (f-MWCNTs) and chitosan (CS) immobilised with Prussian blue. Drinking water that contained soluble manganese ($ Mn^{2+} $) became insoluble ($ Mn^{3+} $ and $ Mn^{4+} $) when water phytochemistry changed as a result of unpredictably high manganese emissions from human activities into the environment. Manganese toxicity has been associated with brain disorders and metabolic activity. Electrochemical parameters such as (0.1 M, pH 2) phosphate buffer saline supported 5 mM Prussian blue, scan rate = 250 mV $ s^{−1} $, accumulation time = 20 s, and volume 10 $ cm^{3} $ were optimized using the cyclic voltammetry method. The f-MWCNTs/CS/PB generated highest current signal followed by PB/AuE and AuE. The stability of f-MWCNTs/CS/PB showed less than 7% for repeatability and reproducibility. Also, f-MWCNTs/CS/PB/AuE was selective towards $ Mn^{2+} $ with no inferring activity detected. However, this sensor can only be kept for 14 days due to the decreased current signals. Differential pulse voltammetry method was used to detect different amounts of $ Mn^{2+} $ ranging from 0.2 to 3 ppm under optimal conditions. The limit of detection (LOD) was found to be 2.60 × $ 10^{–6} $ M, with correlation coefficient (0.2–1 ppm) y = 0.0413x + 0.0734, with R2 = 0.9679. The percent recovery of a drinking water sample ranges from 94.87 to 100.4%. The modified electrode (f-MWCNTs/CS/PB/AuE) has various advantages for detecting $ Mn^{2+} $ in drinking water, including a simple procedure, less operating time, high sensitivity and selectivity. Graphical abstract | ||
| 650 | 4 | |a Manganese ion |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Functionalized multiwalled carbon nanotubes |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Chitosan |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Prussian blue |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Drinking water |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Siddiquee, Shafiquzzaman |4 aut | |
| 700 | 1 | |a Saallah, Suryani |4 aut | |
| 700 | 1 | |a Lal, Mohammad Tamrin Mohamad |4 aut | |
| 700 | 1 | |a Naznin, Most Tahera |4 aut | |
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