Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration

A flow injection system coupled to a photodiode array spectrophotometer (FI-PDA) for the multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels is presented. The substitution reaction of metal-nitrilotriacetic complexes (M-NTA) by 4-(2-pyridilazo) resorcinol (PAR) instead of t...

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Autores principales:	Fernández, F.M., Tudino, M.B., Troccoli, O.E.
Formato:	JOUR
Materias:	Co Cu Fe Figures of merit Flow injection Multicomponent kinetic determination Multivariate calibration Ni PAR Zn cobalt copper iron metal nickel nitrilotriacetic acid resorcinol zinc article calibration chemical reaction complex formation flow injection analysis flow kinetics multivariate analysis priority journal reaction analysis reaction time spectrophotometry Rickettsia sp. PAR
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00032670_v433_n1_p119_Fernandez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00032670_v433_n1_p119_Fernandez
record_format	dspace
spelling	todo:paper_00032670_v433_n1_p119_Fernandez2023-10-03T13:55:43Z Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration Fernández, F.M. Tudino, M.B. Troccoli, O.E. Co Cu Fe Figures of merit Flow injection Multicomponent kinetic determination Multivariate calibration Ni PAR Zn cobalt copper iron metal nickel nitrilotriacetic acid resorcinol zinc article calibration chemical reaction complex formation flow injection analysis flow kinetics multivariate analysis priority journal reaction analysis reaction time spectrophotometry Rickettsia sp. PAR A flow injection system coupled to a photodiode array spectrophotometer (FI-PDA) for the multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels is presented. The substitution reaction of metal-nitrilotriacetic complexes (M-NTA) by 4-(2-pyridilazo) resorcinol (PAR) instead of the direct complexation of the free ions with PAR is employed. In this way, the spectral differences between the colored complexes are combined with the different reaction rates of the ions producing a more specific λ-time region for each metal enhancing the selectivity. Since the NTA-M-PAR system is fast and the pure analyte profiles appear partially overlapped in the time and λ-axis, temporal and spectral information were added to PLS and PCR models to improve results and to increase the number of metals to be determined. The developed method provides the fast and cheap determination of the five metals at the sub-ppm range and demonstrates that the use of temporal and spectral information increases the number of analytes to be simultaneously determined, improving the analytical figures of merit as well. © 2001 Elsevier Science B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00032670_v433_n1_p119_Fernandez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Co Cu Fe Figures of merit Flow injection Multicomponent kinetic determination Multivariate calibration Ni PAR Zn cobalt copper iron metal nickel nitrilotriacetic acid resorcinol zinc article calibration chemical reaction complex formation flow injection analysis flow kinetics multivariate analysis priority journal reaction analysis reaction time spectrophotometry Rickettsia sp. PAR
spellingShingle	Co Cu Fe Figures of merit Flow injection Multicomponent kinetic determination Multivariate calibration Ni PAR Zn cobalt copper iron metal nickel nitrilotriacetic acid resorcinol zinc article calibration chemical reaction complex formation flow injection analysis flow kinetics multivariate analysis priority journal reaction analysis reaction time spectrophotometry Rickettsia sp. PAR Fernández, F.M. Tudino, M.B. Troccoli, O.E. Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
topic_facet	Co Cu Fe Figures of merit Flow injection Multicomponent kinetic determination Multivariate calibration Ni PAR Zn cobalt copper iron metal nickel nitrilotriacetic acid resorcinol zinc article calibration chemical reaction complex formation flow injection analysis flow kinetics multivariate analysis priority journal reaction analysis reaction time spectrophotometry Rickettsia sp. PAR
description	A flow injection system coupled to a photodiode array spectrophotometer (FI-PDA) for the multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels is presented. The substitution reaction of metal-nitrilotriacetic complexes (M-NTA) by 4-(2-pyridilazo) resorcinol (PAR) instead of the direct complexation of the free ions with PAR is employed. In this way, the spectral differences between the colored complexes are combined with the different reaction rates of the ions producing a more specific λ-time region for each metal enhancing the selectivity. Since the NTA-M-PAR system is fast and the pure analyte profiles appear partially overlapped in the time and λ-axis, temporal and spectral information were added to PLS and PCR models to improve results and to increase the number of metals to be determined. The developed method provides the fast and cheap determination of the five metals at the sub-ppm range and demonstrates that the use of temporal and spectral information increases the number of analytes to be simultaneously determined, improving the analytical figures of merit as well. © 2001 Elsevier Science B.V.
format	JOUR
author	Fernández, F.M. Tudino, M.B. Troccoli, O.E.
author_facet	Fernández, F.M. Tudino, M.B. Troccoli, O.E.
author_sort	Fernández, F.M.
title	Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
title_short	Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
title_full	Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
title_fullStr	Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
title_full_unstemmed	Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration
title_sort	multicomponent kinetic determination of cu, zn, co, ni and fe at trace levels by first and second order multivariate calibration
url	http://hdl.handle.net/20.500.12110/paper_00032670_v433_n1_p119_Fernandez
work_keys_str_mv	AT fernandezfm multicomponentkineticdeterminationofcuznconiandfeattracelevelsbyfirstandsecondordermultivariatecalibration AT tudinomb multicomponentkineticdeterminationofcuznconiandfeattracelevelsbyfirstandsecondordermultivariatecalibration AT troccolioe multicomponentkineticdeterminationofcuznconiandfeattracelevelsbyfirstandsecondordermultivariatecalibration
_version_	1782030412635176960

Multicomponent kinetic determination of Cu, Zn, Co, Ni and Fe at trace levels by first and second order multivariate calibration

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