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An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †

Highly sensitive plasmonic optical fiber platforms combined with receptors have been recently used to obtain selective sensors. A low-cost configuration can be obtained exploiting a D-shaped plastic optical fiber covered with a multilayer sensing surface. The multilayer consists of a gold film, func...

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Autores principales: Pesavento, Maria, Profumo, Antonella, Merli, Daniele, Cucca, Lucia, Zeni, Luigi, Cennamo, Nunzio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928843/
https://www.ncbi.nlm.nih.gov/pubmed/31795303
http://dx.doi.org/10.3390/s19235246
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author Pesavento, Maria
Profumo, Antonella
Merli, Daniele
Cucca, Lucia
Zeni, Luigi
Cennamo, Nunzio
author_facet Pesavento, Maria
Profumo, Antonella
Merli, Daniele
Cucca, Lucia
Zeni, Luigi
Cennamo, Nunzio
author_sort Pesavento, Maria
collection PubMed
description Highly sensitive plasmonic optical fiber platforms combined with receptors have been recently used to obtain selective sensors. A low-cost configuration can be obtained exploiting a D-shaped plastic optical fiber covered with a multilayer sensing surface. The multilayer consists of a gold film, functionalized with a specific receptor, where the surface plasmon resonance (SPR) occurs. The signal is produced by the refractive index variation occurring as a consequence of the receptor-to analyte binding. In this work, a selective sensor for copper(II) detection in drinking water, exploiting a self-assembled monolayer (SAM) of d,l-penicillamine as the sensing layer, has been developed and tested. Different concentrations of copper(II) in NaCl 0.1 M solutions at different pH values and in a real matrix (drinking water) have been considered. The results show that the sensor is able to sense copper(II) at concentrations ranging from 4 × 10(−6) M to 2 × 10(−4) M. The use of this optical chemical sensor is a very attractive perspective for fast, in situ and low-cost detection of Cu(II) in drinking water for human health concerns. Furthermore, the possibility of remote control is feasible as well, because optical fibers are employed.
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spelling pubmed-69288432019-12-26 An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water † Pesavento, Maria Profumo, Antonella Merli, Daniele Cucca, Lucia Zeni, Luigi Cennamo, Nunzio Sensors (Basel) Article Highly sensitive plasmonic optical fiber platforms combined with receptors have been recently used to obtain selective sensors. A low-cost configuration can be obtained exploiting a D-shaped plastic optical fiber covered with a multilayer sensing surface. The multilayer consists of a gold film, functionalized with a specific receptor, where the surface plasmon resonance (SPR) occurs. The signal is produced by the refractive index variation occurring as a consequence of the receptor-to analyte binding. In this work, a selective sensor for copper(II) detection in drinking water, exploiting a self-assembled monolayer (SAM) of d,l-penicillamine as the sensing layer, has been developed and tested. Different concentrations of copper(II) in NaCl 0.1 M solutions at different pH values and in a real matrix (drinking water) have been considered. The results show that the sensor is able to sense copper(II) at concentrations ranging from 4 × 10(−6) M to 2 × 10(−4) M. The use of this optical chemical sensor is a very attractive perspective for fast, in situ and low-cost detection of Cu(II) in drinking water for human health concerns. Furthermore, the possibility of remote control is feasible as well, because optical fibers are employed. MDPI 2019-11-28 /pmc/articles/PMC6928843/ /pubmed/31795303 http://dx.doi.org/10.3390/s19235246 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pesavento, Maria
Profumo, Antonella
Merli, Daniele
Cucca, Lucia
Zeni, Luigi
Cennamo, Nunzio
An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title_full An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title_fullStr An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title_full_unstemmed An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title_short An Optical Fiber Chemical Sensor for the Detection of Copper(II) in Drinking Water †
title_sort optical fiber chemical sensor for the detection of copper(ii) in drinking water †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928843/
https://www.ncbi.nlm.nih.gov/pubmed/31795303
http://dx.doi.org/10.3390/s19235246
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