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Sensitive electrochemiluminescent detection of hydroquinone using silver/luminol-functionalized carbon microspheres
Hui Zhang1, Ziqi Wang1, Yahui Ji1
1Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Anhui Provincial Key Laboratory of Synthetic Chemistry and Applications, College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui, 235000, PR China.
Abstract:
The detection of organic pollutants in water was deemed critical for safeguarding aquatic ecosystems, maintaining human health, and upholding water quality standards. In this study, a novel electrochemiluminescence (ECL) sensor was proposed for the sensitive detection of hydroquinone (HQ) in lake water, utilizing a glassy carbon electrode (GCE) modified with silver/luminol-functionalized carbon microspheres (GCE/CM@Ag/Lu). Due to the consumption of H2O2 by HQ, the ECL signal was attenuated, enabling the quantitative detection of HQ. Under optimized conditions, the linear range for HQ ranged from 1.0 × 10-4-1.0 × 10-10 mol L-1, with a limit of detection (LOD) of 3.3 × 10-11 mol L-1 (S/N = 3). The proposed ECL sensor shows promising potential to open new avenues for water quality assessment.
