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, J., Rodriguez, S.D., Negri, R.M., Battaglini, F.
Formato: JOUR
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: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 todo:paper_09254005_v145_n2_p726_YanezHeras
record_format dspace
spelling todo:paper_09254005_v145_n2_p726_YanezHeras2023-10-03T15:46:12Z Chelating electrodes as taste sensor for the trace assessment of metal ions Yánez Heras, J. Rodriguez, S.D. Negri, R.M. Battaglini, F. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, J.
Rodriguez, S.D.
Negri, R.M.
Battaglini, F.
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.
format JOUR
author Yánez Heras, J.
Rodriguez, S.D.
Negri, R.M.
Battaglini, F.
author_facet Yánez Heras, J.
Rodriguez, S.D.
Negri, R.M.
Battaglini, F.
author_sort Yánez Heras, J.
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
url http://hdl.handle.net/20.500.12110/paper_09254005_v145_n2_p726_YanezHeras
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AT negrirm chelatingelectrodesastastesensorforthetraceassessmentofmetalions
AT battaglinif chelatingelectrodesastastesensorforthetraceassessmentofmetalions
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