CrossRef Open Access 2023

Determination of catechol in tea based on the inhibition of CS@Cd composites electrochemiluminescence

Gen Liu Chunyu Yao Hui Zhang Wei Ma

Abstrak

Abstract To address growing concerns about food safety, sensors for catechol (CA) have been urgently needed. In this work, cadmium-supported carbon spheres (CS@Cd) composites are prepared via hydrothermal synthesis and further used to fabricate a CS@Cd modified glassy carbon electrode (CS@Cd/GCE). Importantly, CS@Cd has good sensitization effect on the electrochemiluminescence (ECL) of luminol-H2O2 system. Besides, CA is able to inhibit the ECL of CS@Cd/GCE owing to the consumption of H2O2 induced by CA, and thus a novel strategy for ECL detection of CA is formulated. At optimum conditions, CS@Cd/GCE exhibits excellent linear relationship in the range of 1.0×10-11 ~ 1.0×10-4 mol·L-1 for CA detection with a low limit of detection of 2.5×10-12 (S/N = 3). Finally, this method achieves a satisfactory outcome for the detection of CA in tea samples.

Penulis (4)

Gen Liu

Chunyu Yao

Hui Zhang

Wei Ma

Format Sitasi

APA MLA BibTeX

Liu, G., Yao, C., Zhang, H., Ma, W. (2023). Determination of catechol in tea based on the inhibition of CS@Cd composites electrochemiluminescence. https://doi.org/10.21203/rs.3.rs-2538844/v1

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Informasi Jurnal

Tahun Terbit: 2023
Bahasa: en
Sumber Database: CrossRef
DOI: 10.21203/rs.3.rs-2538844/v1
Akses: Open Access ✓