Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode
Herein, we reported carbon paste electrode modified with graphitic carbon nitride (g–C3N4–CPE) to determine of tryptophan (Trp) using voltametric techniques. Various spectroscopic and electrochemical techniques were used to characterize the as-synthesized g-C3N4 and the assembled electrodes. The tra...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023082415 |
| _version_ | 1797646460923150336 |
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| author | Habtamu Adefris Abebe Abebe Diro Shimeles Addisu Kitte |
| author_facet | Habtamu Adefris Abebe Abebe Diro Shimeles Addisu Kitte |
| author_sort | Habtamu Adefris Abebe |
| collection | DOAJ |
| description | Herein, we reported carbon paste electrode modified with graphitic carbon nitride (g–C3N4–CPE) to determine of tryptophan (Trp) using voltametric techniques. Various spectroscopic and electrochemical techniques were used to characterize the as-synthesized g-C3N4 and the assembled electrodes. The transfer coefficient, rate constant and the diffusion coefficient of Trp in this system were found to be 0.28, 1.9 × 104 M−1s−1 and 3.2 × 10−5 cm2s−1, respectively. The linear range was obtained for the detection of Trp using LSV is from 0.1 μM to 120 μM at pH 5. The limit of detection (LOD) (3σ/m) was 0.085 μM. The demonstrated modified CPE was also effectively used for the detection of Trp in milk with percentage recovery of 98 %–105.2 %. Furthermore, the modified CPE exhibited good repeatability, reproducibility and appropriate selectivity. |
| first_indexed | 2024-03-11T15:01:55Z |
| format | Article |
| id | doaj.art-91db7fda06dd46c4b91ef3f7e5d98b07 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-11T15:01:55Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-91db7fda06dd46c4b91ef3f7e5d98b072023-10-30T06:08:11ZengElsevierHeliyon2405-84402023-10-01910e21033Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrodeHabtamu Adefris Abebe0Abebe Diro1Shimeles Addisu Kitte2Department of Chemistry, College of Natural Sciences, Jimma University, P. O. Box 378, Jimma, EthiopiaDepartment of Chemistry, College of Natural Sciences, Jimma University, P. O. Box 378, Jimma, EthiopiaCorresponding author.; Department of Chemistry, College of Natural Sciences, Jimma University, P. O. Box 378, Jimma, EthiopiaHerein, we reported carbon paste electrode modified with graphitic carbon nitride (g–C3N4–CPE) to determine of tryptophan (Trp) using voltametric techniques. Various spectroscopic and electrochemical techniques were used to characterize the as-synthesized g-C3N4 and the assembled electrodes. The transfer coefficient, rate constant and the diffusion coefficient of Trp in this system were found to be 0.28, 1.9 × 104 M−1s−1 and 3.2 × 10−5 cm2s−1, respectively. The linear range was obtained for the detection of Trp using LSV is from 0.1 μM to 120 μM at pH 5. The limit of detection (LOD) (3σ/m) was 0.085 μM. The demonstrated modified CPE was also effectively used for the detection of Trp in milk with percentage recovery of 98 %–105.2 %. Furthermore, the modified CPE exhibited good repeatability, reproducibility and appropriate selectivity.http://www.sciencedirect.com/science/article/pii/S2405844023082415Electrochemical detectionTryptophanGraphitic carbon nitride modified carbon paste electrodeCyclic voltammetryLinear sweep voltammetry |
| spellingShingle | Habtamu Adefris Abebe Abebe Diro Shimeles Addisu Kitte Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode Heliyon Electrochemical detection Tryptophan Graphitic carbon nitride modified carbon paste electrode Cyclic voltammetry Linear sweep voltammetry |
| title | Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| title_full | Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| title_fullStr | Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| title_full_unstemmed | Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| title_short | Voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| title_sort | voltammetric determination of tryptophan at graphitic carbon nitride modified carbon paste electrode |
| topic | Electrochemical detection Tryptophan Graphitic carbon nitride modified carbon paste electrode Cyclic voltammetry Linear sweep voltammetry |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023082415 |
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