Multi-walled carbon nanotubes dispersed in Amburana cearensis gum: support for the electropolymerization of Poly(Alizarin Red S) and detection of anabolic hormones.
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| Title: | Multi-walled carbon nanotubes dispersed in Amburana cearensis gum: support for the electropolymerization of Poly(Alizarin Red S) and detection of anabolic hormones. |
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| Authors: | de Almeida, Geanderson Emílio1 (AUTHOR), Mororó, Káliton Pereira1 (AUTHOR), de Farias, Emanuel Airton Oliveira1 (AUTHOR) emanuel16airton@gmail.com, Eiras, Carla1 (AUTHOR) eirasc@ufpi.edu.br |
| Source: | Journal of Applied Electrochemistry. Feb2025, Vol. 55 Issue 2, p509-525. 17p. |
| Subjects: | Multiwalled carbon nanotubes, Pyrolytic graphite, Plant exudates, Doping in sports, Polysaccharides |
| Abstract: | The detection of Anabolic Androgenic Steroids (AAS) has become a constant concern in sports and health due to the misuse of these hormones. Given this scenario, rapid, sensitive, and low-cost detection of these compounds has become a priority. In this study, a Pyrolytic Graphite Electrode (PGE) was modified with multi-walled carbon nanotubes (MWCNTs), which were dispersed in the gum of Amburana cearensis (GAmb), a polysaccharide obtained from a plant native to northeastern Brazil. Subsequently, PGE/MWCNTs-GAmb was used as a substrate for the electrosynthesis of Poly(Alizarin Red S) (PARS), whose electrochemical processes interact with high affinity with AAS, such as Testosterone (T), Testosterone Propionate (TP) and Oxandrolone (OXA). The prior modification of PGE by MWCNTs-GAmb generated more active sites for PARS formation than direct electropolymerization in PGE, ensuring greater polymer formation and better electrochemical behavior. After extensive electrochemical characterization, the PGE/MWCNTs-GAmb/PARS system was proposed as a sensor for AAS detection. Thus, T, TP, and OXA were detected in both artificial and human urine, with recovery levels close to 100% by the standard addition method. The detection (LOD) and quantification (LOQ) limits for these AAS were estimated at an average of ≅ 0.275 μg L−1 and ≅ 0.916 μg L−1, respectively. Although the system does not differ among AAS, the sensor is an excellent candidate for primary screening of possible doping before sports competitions. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Applied Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 182975108 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multi-walled carbon nanotubes dispersed in Amburana cearensis gum: support for the electropolymerization of Poly(Alizarin Red S) and detection of anabolic hormones. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22de+Almeida%2C+Geanderson+Emílio%22">de Almeida, Geanderson Emílio</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mororó%2C+Káliton+Pereira%22">Mororó, Káliton Pereira</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22de+Farias%2C+Emanuel+Airton+Oliveira%22">de Farias, Emanuel Airton Oliveira</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> emanuel16airton@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Eiras%2C+Carla%22">Eiras, Carla</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> eirasc@ufpi.edu.br</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Applied+Electrochemistry%22">Journal of Applied Electrochemistry</searchLink>. Feb2025, Vol. 55 Issue 2, p509-525. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Multiwalled+carbon+nanotubes%22">Multiwalled carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Pyrolytic+graphite%22">Pyrolytic graphite</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+exudates%22">Plant exudates</searchLink><br /><searchLink fieldCode="DE" term="%22Doping+in+sports%22">Doping in sports</searchLink><br /><searchLink fieldCode="DE" term="%22Polysaccharides%22">Polysaccharides</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The detection of Anabolic Androgenic Steroids (AAS) has become a constant concern in sports and health due to the misuse of these hormones. Given this scenario, rapid, sensitive, and low-cost detection of these compounds has become a priority. In this study, a Pyrolytic Graphite Electrode (PGE) was modified with multi-walled carbon nanotubes (MWCNTs), which were dispersed in the gum of Amburana cearensis (GAmb), a polysaccharide obtained from a plant native to northeastern Brazil. Subsequently, PGE/MWCNTs-GAmb was used as a substrate for the electrosynthesis of Poly(Alizarin Red S) (PARS), whose electrochemical processes interact with high affinity with AAS, such as Testosterone (T), Testosterone Propionate (TP) and Oxandrolone (OXA). The prior modification of PGE by MWCNTs-GAmb generated more active sites for PARS formation than direct electropolymerization in PGE, ensuring greater polymer formation and better electrochemical behavior. After extensive electrochemical characterization, the PGE/MWCNTs-GAmb/PARS system was proposed as a sensor for AAS detection. Thus, T, TP, and OXA were detected in both artificial and human urine, with recovery levels close to 100% by the standard addition method. The detection (LOD) and quantification (LOQ) limits for these AAS were estimated at an average of ≅ 0.275 μg L−1 and ≅ 0.916 μg L−1, respectively. Although the system does not differ among AAS, the sensor is an excellent candidate for primary screening of possible doping before sports competitions. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Applied Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10800-024-02174-0 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 509 Subjects: – SubjectFull: Multiwalled carbon nanotubes Type: general – SubjectFull: Pyrolytic graphite Type: general – SubjectFull: Plant exudates Type: general – SubjectFull: Doping in sports Type: general – SubjectFull: Polysaccharides Type: general Titles: – TitleFull: Multi-walled carbon nanotubes dispersed in Amburana cearensis gum: support for the electropolymerization of Poly(Alizarin Red S) and detection of anabolic hormones. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: de Almeida, Geanderson Emílio – PersonEntity: Name: NameFull: Mororó, Káliton Pereira – PersonEntity: Name: NameFull: de Farias, Emanuel Airton Oliveira – PersonEntity: Name: NameFull: Eiras, Carla IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 0021891X Numbering: – Type: volume Value: 55 – Type: issue Value: 2 Titles: – TitleFull: Journal of Applied Electrochemistry Type: main |
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