Chelating electrodes as taste sensor for the trace assessment of metal ions

Impedance spectroscopy combined with principal component analysis allows the trace detection of metal ions. The detection system is based on two modified electrodes, each of them containing a chelating agent (pyrocatechol violet and a nitrilotriacetic derivative); as the chelator is able to capture...

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Autores principales:	Yánez Heras, Jorge Eduardo, Rodriguez, Silvio David, Negri, Ricardo Martin, Battaglini, Fernando
Publicado:	2010
Materias:	Chelating electrode Electronic tongue Impedance Principal component analysis Trace metal detection Aqueous samples Aqueous system Chelating agent Detection system Impedance spectroscopy Low concentrations Micromolar level Mineral water Modified electrodes Pyrocatechol violet Surface environments Taste sensor Trace detection Trace metal Ultra-pure water Beverages Calcium Chelation Electrodes Electronic tongues Lead Mercury (metal) Metal analysis Metal detectors Metal ions Metals Sensors Sodium chloride Trace analysis Trace elements Water
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09254005_v145_n2_p726_YanezHeras http://hdl.handle.net/20.500.12110/paper_09254005_v145_n2_p726_YanezHeras
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09254005_v145_n2_p726_YanezHeras
record_format	dspace
spelling	paper:paper_09254005_v145_n2_p726_YanezHeras2023-06-08T15:51:15Z Chelating electrodes as taste sensor for the trace assessment of metal ions Yánez Heras, Jorge Eduardo Rodriguez, Silvio David Negri, Ricardo Martin Battaglini, Fernando Chelating electrode Electronic tongue Impedance Principal component analysis Trace metal detection Aqueous samples Aqueous system Chelating agent Detection system Electronic tongue Impedance spectroscopy Low concentrations Micromolar level Mineral water Modified electrodes Pyrocatechol violet Surface environments Taste sensor Trace detection Trace metal Ultra-pure water Beverages Calcium Chelation Electrodes Electronic tongues Lead Mercury (metal) Metal analysis Metal detectors Metal ions Metals Sensors Sodium chloride Trace analysis Trace elements Water Principal component analysis Impedance spectroscopy combined with principal component analysis allows the trace detection of metal ions. The detection system is based on two modified electrodes, each of them containing a chelating agent (pyrocatechol violet and a nitrilotriacetic derivative); as the chelator is able to capture the metal ion at very low concentrations, important electrical changes are produced on the surface environment, generating patterns with different features for each ion. The system is able to differentiate eight metal ions (Al3+, Fe3+, Cd2+, Pb2+, Hg2+, Cu2+, Ca2+ and Ag+) at micromolar levels in ultrapure water. The method allows the detection of metal ions in aqueous samples without the need of sample conditioning, rinsing steps or the addition of probes. Selecting the appropriate frequencies and sensors, the array can also be applied to different aqueous systems such as bottled mineral water or concentrated NaCl (27%) yielding similar results. © 2010 Elsevier B.V. All rights reserved. Fil:Yánez Heras, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodriguez, S.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Negri, R.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Battaglini, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09254005_v145_n2_p726_YanezHeras http://hdl.handle.net/20.500.12110/paper_09254005_v145_n2_p726_YanezHeras
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chelating electrode Electronic tongue Impedance Principal component analysis Trace metal detection Aqueous samples Aqueous system Chelating agent Detection system Electronic tongue Impedance spectroscopy Low concentrations Micromolar level Mineral water Modified electrodes Pyrocatechol violet Surface environments Taste sensor Trace detection Trace metal Ultra-pure water Beverages Calcium Chelation Electrodes Electronic tongues Lead Mercury (metal) Metal analysis Metal detectors Metal ions Metals Sensors Sodium chloride Trace analysis Trace elements Water Principal component analysis
spellingShingle	Chelating electrode Electronic tongue Impedance Principal component analysis Trace metal detection Aqueous samples Aqueous system Chelating agent Detection system Electronic tongue Impedance spectroscopy Low concentrations Micromolar level Mineral water Modified electrodes Pyrocatechol violet Surface environments Taste sensor Trace detection Trace metal Ultra-pure water Beverages Calcium Chelation Electrodes Electronic tongues Lead Mercury (metal) Metal analysis Metal detectors Metal ions Metals Sensors Sodium chloride Trace analysis Trace elements Water Principal component analysis Yánez Heras, Jorge Eduardo Rodriguez, Silvio David Negri, Ricardo Martin Battaglini, Fernando Chelating electrodes as taste sensor for the trace assessment of metal ions
topic_facet	Chelating electrode Electronic tongue Impedance Principal component analysis Trace metal detection Aqueous samples Aqueous system Chelating agent Detection system Electronic tongue Impedance spectroscopy Low concentrations Micromolar level Mineral water Modified electrodes Pyrocatechol violet Surface environments Taste sensor Trace detection Trace metal Ultra-pure water Beverages Calcium Chelation Electrodes Electronic tongues Lead Mercury (metal) Metal analysis Metal detectors Metal ions Metals Sensors Sodium chloride Trace analysis Trace elements Water Principal component analysis
description	Impedance spectroscopy combined with principal component analysis allows the trace detection of metal ions. The detection system is based on two modified electrodes, each of them containing a chelating agent (pyrocatechol violet and a nitrilotriacetic derivative); as the chelator is able to capture the metal ion at very low concentrations, important electrical changes are produced on the surface environment, generating patterns with different features for each ion. The system is able to differentiate eight metal ions (Al3+, Fe3+, Cd2+, Pb2+, Hg2+, Cu2+, Ca2+ and Ag+) at micromolar levels in ultrapure water. The method allows the detection of metal ions in aqueous samples without the need of sample conditioning, rinsing steps or the addition of probes. Selecting the appropriate frequencies and sensors, the array can also be applied to different aqueous systems such as bottled mineral water or concentrated NaCl (27%) yielding similar results. © 2010 Elsevier B.V. All rights reserved.
author	Yánez Heras, Jorge Eduardo Rodriguez, Silvio David Negri, Ricardo Martin Battaglini, Fernando
author_facet	Yánez Heras, Jorge Eduardo Rodriguez, Silvio David Negri, Ricardo Martin Battaglini, Fernando
author_sort	Yánez Heras, Jorge Eduardo
title	Chelating electrodes as taste sensor for the trace assessment of metal ions
title_short	Chelating electrodes as taste sensor for the trace assessment of metal ions
title_full	Chelating electrodes as taste sensor for the trace assessment of metal ions
title_fullStr	Chelating electrodes as taste sensor for the trace assessment of metal ions
title_full_unstemmed	Chelating electrodes as taste sensor for the trace assessment of metal ions
title_sort	chelating electrodes as taste sensor for the trace assessment of metal ions
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09254005_v145_n2_p726_YanezHeras http://hdl.handle.net/20.500.12110/paper_09254005_v145_n2_p726_YanezHeras
work_keys_str_mv	AT yanezherasjorgeeduardo chelatingelectrodesastastesensorforthetraceassessmentofmetalions AT rodriguezsilviodavid chelatingelectrodesastastesensorforthetraceassessmentofmetalions AT negriricardomartin chelatingelectrodesastastesensorforthetraceassessmentofmetalions AT battaglinifernando chelatingelectrodesastastesensorforthetraceassessmentofmetalions
_version_	1768545934999814144

Chelating electrodes as taste sensor for the trace assessment of metal ions

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