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Reference type: Journal
Authors: Zhang RR, Gan XT, Xu JJ, Pan QF, Liu H, Sun AL, Shi XZ, Zhang ZM
Article Title: Ultrasensitive electrochemiluminescence sensor based on perovskite quantum dots coated with molecularly imprinted polymer for prometryn determination.
Publication date: 2022
Journal: Food Chemistry
Volume: 370
Article Number: 131353.
DOI: 10.1016/j.foodchem.2021.131353
Alternative URL: https://www.sciencedirect.com/science/article/pii/S0308814621023591

Abstract: A highly effective molecularly imprinted electrochemiluminescence sensor was constructed for prometryn determination in environmental and biological samples by using perovskite quantum dots coated with a molecularly imprinted silica layer (MIP/CsPbBr3-QDs) as the recognition and response element. MIP/CsPbBr3-QDs were immobilized on a glassy carbon electrode (GCE) through electropolymerization, and the electrochemiluminescence (ECL) response of MIP/CsPbBr3-QDs could be motivated under the condition of H2O2 as co-reactant. ECL signal was selectively quenched with prometryn by hindering electron transfer and directly proportional to the logarithm of prometryn concentration (0.10-500.0 μg/L) with a correlation coefficient of 0.9960. Limits of detection in fish and seawater samples were 0.010 μg/kg and 0.050 μg/L, respectively. Excellent recoveries of 88.0%-106.0% were acquired for fish and seawater samples with a relative standard deviation below 4.2%. The constructed MIECL sensor based on MIP/CsPbBr3-QDs showed good stability, accuracy, and precision for sensitive detection of prometryn in aquaculture products and environmental samples
Template and target information: prometryn
Author keywords: Molecularly imprinted polymers, CsPbBr3-QDs, Prometryn, Electrochemiluminescence sensor


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