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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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 |
work_keys_str_mv |
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