Electrochemiluminescence sensor based on resonance energy transfer for detection of chlortetracycline hydrochloride in food
In this work, a highly sensitive electrochemiluminescence (ECL) sensor for Chlortetracycline hydrochloride (CTC) detection was constructed. The complex of g-C<sub>3</sub>N<sub>4</sub>-chitosan (g-C<sub>3</sub>N<sub>4</sub>@CS) and Pt NPs@MIL-101(Fe) were modified to the electrode. In g-C<sub>3</sub>N<sub>4</sub>-S<sub>2</sub>O<sub>8</sub><sup>2-</sup> system, g-C<sub>3</sub>N<sub>4</sub> served as an ECL signal. Synthesized Pt NPs@MIL-101(Fe) acted as a novel coreaction promoter of the system, further enhancing the ECL signal. With the addition of CTC, the ECL signal decreased, and this quenching phenomenon was mainly because of ECL-RET and the related mechanism was studied. Under the best conditions, a strong linear relationship was observed between the change in ECL signal (ΔI) and the logarithm of CTC concentration (lgC<sub>CTC</sub>), spanning from 5 × 10<sup>-14</sup> to 5 × 10<sup>-9</sup> mol L<sup>-1</sup>. The linear equation was ΔI = 16,817 + 1179.4 lgC<sub>CTC</sub> with a correlation coefficient of 0.995. The method demonstrates an exceptionally low detection limit of 1.7 × 10<sup>-14</sup> mol L<sup>-1</sup> (S/N = 3), making it suitable for real sample analysis.
Authors
- Wenzhuo Wang (ORCID: https://orcid.org/0000-0002-3878-0968)
- Yanjia Guo
- Yujia Song (ORCID: https://orcid.org/0009-0001-8507-285X)
- Hanyue Jiang
- Li Tian (ORCID: https://orcid.org/0000-0003-0418-724X)
- Pengfei Han (ORCID: https://orcid.org/0000-0003-2538-0583)
- Ruidan Li
- Jing Wang (ORCID: https://orcid.org/0000-0001-7199-4784)
Institutions
- Changchun Normal University (CN)
Publication Details
- Journal
- Food Chemistry
- Published
- 2025-04-07
- DOI
- https://doi.org/10.1016/j.foodchem.2025.144222
- Citations
- 9
- Primary Topic
- Advanced biosensing and bioanalysis techniques
- Type
- article
- Field-Weighted Citation Impact
- 7.25