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Reference type: Journal
Authors: Li HF, Xie T, Shi DD, Jin J, Xie CG
Article Title: Enhanced electrochemiluminescence of luminol at the gold nanoparticle/carbon nanotube/electropolymerised molecular imprinting composite membrane interface for selective recognition of triazophos.
Publication date: 2016
Journal: International Journal of Environmental Analytical Chemistry
Volume: 96
Issue: (13)
Page numbers: 1300-1311.
DOI: 10.1080/03067319.2016.1250261

Abstract: This paper reports a surface molecular self-assembly strategy for imprinting triazophos in the electropolymerised poly(aminthiophenol) (PATP) membranes at the surface of gold nanoparticle (AuNP)/carbon nanotube (CNT) composites modified glassy (GC) electrode for electrochemiluminescent (ECL) detection of pesticide triazophos. The electrochemical and ECL behaviours of luminol at the imprinted PATP/AuNP/CNT/GC electrode were investigated before and after the rebinding of triazophos. It was also found that the ECL intensity was strikingly enhanced by the adsorbed triazophos molecules in the imprinted PATP/AuNP/CNT composite membranes, which was about 5.2-fold as compared with the blank ECL intensity. On this basis, the molecularly imprinted polymer (MIP)-ECL sensor is established for high sensitive and selective detection of triazophos residues in vegetable samples. The resulting MIP-ECL sensor shows wide linear ranges from 3.1 x 10-8 to 3.1 x 10-5 g L-1 with lower detection limit of 3.1 x 10-9 g L-1 for triazophos. Moreover, the MIP-ECL sensor has the advantages of high sensitivity, speed, specificity, stability and can become a promising technique for organophosphate pesticide detection
Template and target information: triazophos
Author keywords: surface molecular imprinting, Electrochemiluminescence, Triazophos, Gold nanoparticle, Carbon nanotube

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