Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode
A simple and efficient new electrochemical sensor based on molecularly imprinted polymer has been developed for selective detection of an anticancer agent Etoposide (ETP). The sensor was prepared by electropolymerization via cyclic voltammetry (CV) of pyrrole onto a glassy carbon electrode (GCE) in...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/5394235 |
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| author | Hajer Hrichi Lotfi Monser Nafaâ Adhoum |
| author_facet | Hajer Hrichi Lotfi Monser Nafaâ Adhoum |
| author_sort | Hajer Hrichi |
| collection | DOAJ |
| description | A simple and efficient new electrochemical sensor based on molecularly imprinted polymer has been developed for selective detection of an anticancer agent Etoposide (ETP). The sensor was prepared by electropolymerization via cyclic voltammetry (CV) of pyrrole onto a glassy carbon electrode (GCE) in the presence of ETP molecules. The extraction of ETP molecules embedded in the polymeric matrix was carried out by overoxidation in sodium hydroxide medium using CV. Various important parameters affecting the performance of the imprinted film (MIP) coated sensor were studied and optimized using differential pulse voltammetry (DPV). Under optimal conditions, the sensor response exhibited a linear dependence on ETP concentration (R2 = 0.999) over the range 5.0×10−7 M – 1.0×10−5 M with a LOD (3σ/m) of 2.8×10−9 M. The precision (% RSD, n=6) of the proposed sensor for intra- and interdays was found to be 0.84 and 2.46%, respectively. The selectivity of MIP/GCE sensor toward ETP was investigated in the presence of different interfering molecules including excipients and ETP metabolites. The developed sensor showed great recognition ability toward ETP and was successfully applied for its determination in injectable dosage forms and biological human fluids. |
| format | Article |
| id | doaj-art-3d7cabf39ec24c41b3b4a04f9ac74de7 |
| institution | Kabale University |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-3d7cabf39ec24c41b3b4a04f9ac74de72025-08-20T03:35:51ZengWileyInternational Journal of Electrochemistry2090-35292090-35372019-01-01201910.1155/2019/53942355394235Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon ElectrodeHajer Hrichi0Lotfi Monser1Nafaâ Adhoum2Chemistry Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi ArabiaNational Institute of Applied Sciences and Technology, Carthage University, Centre Urbain Nord, B.P. No 676, 1080 Tunis Cedex, TunisiaNational Institute of Applied Sciences and Technology, Carthage University, Centre Urbain Nord, B.P. No 676, 1080 Tunis Cedex, TunisiaA simple and efficient new electrochemical sensor based on molecularly imprinted polymer has been developed for selective detection of an anticancer agent Etoposide (ETP). The sensor was prepared by electropolymerization via cyclic voltammetry (CV) of pyrrole onto a glassy carbon electrode (GCE) in the presence of ETP molecules. The extraction of ETP molecules embedded in the polymeric matrix was carried out by overoxidation in sodium hydroxide medium using CV. Various important parameters affecting the performance of the imprinted film (MIP) coated sensor were studied and optimized using differential pulse voltammetry (DPV). Under optimal conditions, the sensor response exhibited a linear dependence on ETP concentration (R2 = 0.999) over the range 5.0×10−7 M – 1.0×10−5 M with a LOD (3σ/m) of 2.8×10−9 M. The precision (% RSD, n=6) of the proposed sensor for intra- and interdays was found to be 0.84 and 2.46%, respectively. The selectivity of MIP/GCE sensor toward ETP was investigated in the presence of different interfering molecules including excipients and ETP metabolites. The developed sensor showed great recognition ability toward ETP and was successfully applied for its determination in injectable dosage forms and biological human fluids.http://dx.doi.org/10.1155/2019/5394235 |
| spellingShingle | Hajer Hrichi Lotfi Monser Nafaâ Adhoum Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode International Journal of Electrochemistry |
| title | Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode |
| title_full | Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode |
| title_fullStr | Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode |
| title_full_unstemmed | Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode |
| title_short | Selective Electrochemical Determination of Etoposide Using a Molecularly Imprinted Overoxidized Polypyrrole Coated Glassy Carbon Electrode |
| title_sort | selective electrochemical determination of etoposide using a molecularly imprinted overoxidized polypyrrole coated glassy carbon electrode |
| url | http://dx.doi.org/10.1155/2019/5394235 |
| work_keys_str_mv | AT hajerhrichi selectiveelectrochemicaldeterminationofetoposideusingamolecularlyimprintedoveroxidizedpolypyrrolecoatedglassycarbonelectrode AT lotfimonser selectiveelectrochemicaldeterminationofetoposideusingamolecularlyimprintedoveroxidizedpolypyrrolecoatedglassycarbonelectrode AT nafaaadhoum selectiveelectrochemicaldeterminationofetoposideusingamolecularlyimprintedoveroxidizedpolypyrrolecoatedglassycarbonelectrode |