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Reference type: Journal
Authors: Valero-Navarro A, Salinas-Castillo A, Fernández-Sánchez JF, Segura-Carretero A, Mallavia R, Fernández-Gutiérrez A
Article Title: The development of a MIP-optosensor for the detection of monoamine naphthalenes in drinking water.
Publication date: 2009
Journal: Biosensors and Bioelectronics
Volume: 24
Issue: (7)
Page numbers: 2305-2311.
DOI: 10.1016/j.bios.2008.11.022
Alternative URL: http://www.sciencedirect.com/science/article/B6TFC-4V3HF8J-7/2/69b5592c155c36c158ed2c5f0374b526

Abstract: To enhance the advantages of fluorescent flow-through sensing for drinking water we have designed a novel sensing matrix based on molecularly imprinted polymers (MIPs). The synergic combination of a tailor-made MIP recognition with a selective room temperature fluorescence detection is a novel concept for optosensing devices and is assessed here for the simple and selective determination of pollutants in water. We describe a simple approach to preparing synthetic receptors for monoamine naphthalene compounds (MA-NCs) using non-covalent molecular imprinting techniques and naphthalene as template. We examine in detail the binding characteristics of the imprinted polymer and describe the flow-through sensor of MA-NCs by solid-surface fluorescence. Its detection limits for recognizing 1-naphthylamine (1-NA) and 2-naphthylamine (2-NA) separately are 26ángámL-1 and 50ángámL-1, respectively, and it also determines 1-NA and 2-NA simultaneously with a detection limit of 45ángámL-1. All the instrumental, chemical and flow variables were carefully optimized and an interference study was carried out to demonstrate its applicability and selectivity. Finally, we applied it to the analysis of 1-NA and 2-NA in tap and mineral waters, obtaining a 98% average recovery rate
Template and target information: 1-naphthylamine, 1-NA, 2-naphthylamine, 2-NA, monoamine naphthalene compounds
Author keywords: molecular imprinting, Fluorescence optosensor, flow injection, Naphthalene compounds, water analysis

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