Poly(pyrrole-3-carboxylic acid)-modified pencil graphite electrode for the determination of serotonin in biological samples by adsorptive stripping voltammetry
•A thin-film of poly(pyrrole-3-carboxylic acid) was synthesized on pencil graphite.•A novel serotonin sensing strategy was proposed in blood serum and urine.•This strategy is based on electro-reduction of oxidation intermediate of serotonin.•Proposed method showed high sensitivity and selectivity in...
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| Published in | Sensors and actuators. B, Chemical Vol. 215; pp. 518 - 524 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.08.2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0925-4005 1873-3077 |
| DOI | 10.1016/j.snb.2015.03.100 |
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| Abstract | •A thin-film of poly(pyrrole-3-carboxylic acid) was synthesized on pencil graphite.•A novel serotonin sensing strategy was proposed in blood serum and urine.•This strategy is based on electro-reduction of oxidation intermediate of serotonin.•Proposed method showed high sensitivity and selectivity in serotonin determination.•Analytical application of proposed method was successfully tested in real samples.
In this study, we have focused on two subjects which are the preparation of a poly(pyrrole-3-carboxylic acid) modified pencil graphite electrode (p(P3CA)/PGE) and the development of a novel sensing strategy for the determination of serotonin (SER) in blood serum and urine samples. This method is based on the electrochemical reduction of oxidation intermediate of SER formed during electrochemical measurements. The characterization of the p(P3CA)/PGE has been performed by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The analytical parameters such as linear range (between 0.01μM and 1.0μM), detection limit (2.5nM according to S/N=3) and reproducibility (RSD: 3.8% for N: 10) have also been determined. The effects of different substances on the determination of SER have been investigated. The proposed novel sensing method has been successfully tested for the first time in the determination of SER in human blood serum and urine samples. |
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| AbstractList | In this study, we have focused on two subjects which are the preparation of a poly(pyrrole-3-carboxylic acid) modified pencil graphite electrode (p(P3CA)/PGE) and the development of a novel sensing strategy for the determination of serotonin (SER) in blood serum and urine samples. This method is based on the electrochemical reduction of oxidation intermediate of SER formed during electrochemical measurements. The characterization of the p(P3CA)/PGE has been performed by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The analytical parameters such as linear range (between 0.01 mu M and 1.0 mu M), detection limit (2.5nM according to S/N =3) and reproducibility (RSD: 3.8% for N: 10) have also been determined. The effects of different substances on the determination of SER have been investigated. The proposed novel sensing method has been successfully tested for the first time in the determination of SER in human blood serum and urine samples. •A thin-film of poly(pyrrole-3-carboxylic acid) was synthesized on pencil graphite.•A novel serotonin sensing strategy was proposed in blood serum and urine.•This strategy is based on electro-reduction of oxidation intermediate of serotonin.•Proposed method showed high sensitivity and selectivity in serotonin determination.•Analytical application of proposed method was successfully tested in real samples. In this study, we have focused on two subjects which are the preparation of a poly(pyrrole-3-carboxylic acid) modified pencil graphite electrode (p(P3CA)/PGE) and the development of a novel sensing strategy for the determination of serotonin (SER) in blood serum and urine samples. This method is based on the electrochemical reduction of oxidation intermediate of SER formed during electrochemical measurements. The characterization of the p(P3CA)/PGE has been performed by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The analytical parameters such as linear range (between 0.01μM and 1.0μM), detection limit (2.5nM according to S/N=3) and reproducibility (RSD: 3.8% for N: 10) have also been determined. The effects of different substances on the determination of SER have been investigated. The proposed novel sensing method has been successfully tested for the first time in the determination of SER in human blood serum and urine samples. |
| Author | Özcan, Ali İlkbaş, Salih |
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| Snippet | •A thin-film of poly(pyrrole-3-carboxylic acid) was synthesized on pencil graphite.•A novel serotonin sensing strategy was proposed in blood serum and... In this study, we have focused on two subjects which are the preparation of a poly(pyrrole-3-carboxylic acid) modified pencil graphite electrode (p(P3CA)/PGE)... |
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| SubjectTerms | Blood Blood serum Detection Electrodes Pencil graphite Pencils Poly(pyrrole-3-carboxylic acid) Serotonin Serums Urine Voltammetry |
| Title | Poly(pyrrole-3-carboxylic acid)-modified pencil graphite electrode for the determination of serotonin in biological samples by adsorptive stripping voltammetry |
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