Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles
The present study describes a simple sensor developed from Fe3O4 and MWCNT nanoparticles for the simultaneous detection of sulfamethoxazole (SMX) and trimethoprim (TMP). Determination was carried out using cyclic voltammetry, electrochemical impedance spectroscopy, chronoamperometry and differential...
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Royal Society of Chemistry
2021
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| Online Access: | https://pubs.rsc.org/en/content/articlelanding/2018/nj/c8nj00129d http://hdl.handle.net/11408/4556 |
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| author | Bhengo, T. Moyo, M. Shumba, M. Okonkwo, O. J. |
| author_facet | Bhengo, T. Moyo, M. Shumba, M. Okonkwo, O. J. |
| author_sort | Bhengo, T. |
| collection | DSpace |
| description | The present study describes a simple sensor developed from Fe3O4 and MWCNT nanoparticles for the simultaneous detection of sulfamethoxazole (SMX) and trimethoprim (TMP). Determination was carried out using cyclic voltammetry, electrochemical impedance spectroscopy, chronoamperometry and differential pulse voltammetry. Oxidation peaks were obtained at 910 mV (SMX) and 1120 mV (TMP) in Britton–Robinson buffer (pH 6.0). LODs of 1.10 × 10−8 M (SMX; 2.79 μg L−1) and 2.10 × 10−8 M (TMP; 6.10 μg L−1) were obtained. The Fe3O4/MWCNT/GCE showed good stability and selectivity. Furthermore, the simultaneous detection of SMX and TMP in tablets, urine and water was possible using the standard addition method. |
| format | Article |
| id | ir-11408-4556 |
| institution | My University |
| language | English |
| publishDate | 2021 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | ir-11408-45562022-06-27T13:49:06Z Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles Bhengo, T. Moyo, M. Shumba, M. Okonkwo, O. J. Simultaneous oxidative determination antibacterial drugs aqueous solutions electrode modified MWCNTs Fe3O4 nanoparticles The present study describes a simple sensor developed from Fe3O4 and MWCNT nanoparticles for the simultaneous detection of sulfamethoxazole (SMX) and trimethoprim (TMP). Determination was carried out using cyclic voltammetry, electrochemical impedance spectroscopy, chronoamperometry and differential pulse voltammetry. Oxidation peaks were obtained at 910 mV (SMX) and 1120 mV (TMP) in Britton–Robinson buffer (pH 6.0). LODs of 1.10 × 10−8 M (SMX; 2.79 μg L−1) and 2.10 × 10−8 M (TMP; 6.10 μg L−1) were obtained. The Fe3O4/MWCNT/GCE showed good stability and selectivity. Furthermore, the simultaneous detection of SMX and TMP in tablets, urine and water was possible using the standard addition method. 2021-11-18T12:01:36Z 2021-11-18T12:01:36Z 2018 Article 1144-0546 https://pubs.rsc.org/en/content/articlelanding/2018/nj/c8nj00129d http://hdl.handle.net/11408/4556 en New Journal of Chemistry Iss.7; open Royal Society of Chemistry |
| spellingShingle | Simultaneous oxidative determination antibacterial drugs aqueous solutions electrode modified MWCNTs Fe3O4 nanoparticles Bhengo, T. Moyo, M. Shumba, M. Okonkwo, O. J. Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title | Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title_full | Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title_fullStr | Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title_full_unstemmed | Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title_short | Simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with MWCNTs decorated with Fe3O4 nanoparticles |
| title_sort | simultaneous oxidative determination of antibacterial drugs in aqueous solutions using an electrode modified with mwcnts decorated with fe3o4 nanoparticles |
| topic | Simultaneous oxidative determination antibacterial drugs aqueous solutions electrode modified MWCNTs Fe3O4 nanoparticles |
| url | https://pubs.rsc.org/en/content/articlelanding/2018/nj/c8nj00129d http://hdl.handle.net/11408/4556 |
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