Automatic calibration for on-line process monitoring in continuous-flow systems

An automatic procedure for calibration in continuous-flow systems is proposed. A flow gradient unit in the sample channel, controlled via a switching valve, delivers a concentration gradient of the standard so that the standard concentration varies with time after the flow-rate gradient is started....

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Detalles Bibliográficos
Autores principales: Agudo, Manuel, Ríos, Angel, Valcárcel, Miguel, Danet, Andrei
Formato: Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 1995
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2548111/
https://www.ncbi.nlm.nih.gov/pubmed/18924785
http://dx.doi.org/10.1155/S1463924695000022
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author Agudo, Manuel
Ríos, Angel
Valcárcel, Miguel
Danet, Andrei
author_facet Agudo, Manuel
Ríos, Angel
Valcárcel, Miguel
Danet, Andrei
author_sort Agudo, Manuel
collection PubMed
description An automatic procedure for calibration in continuous-flow systems is proposed. A flow gradient unit in the sample channel, controlled via a switching valve, delivers a concentration gradient of the standard so that the standard concentration varies with time after the flow-rate gradient is started. Thus, the signal (absorbance)- concentration relationship can be determined and checked for (recalibration) as frequently as required. The procedure was applied to a simulated continuous monitoring of hydrazine in waters, as well as to specific water samples that were spiked with hydrazine at different concentrations.
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spelling pubmed-25481112008-10-16 Automatic calibration for on-line process monitoring in continuous-flow systems Agudo, Manuel Ríos, Angel Valcárcel, Miguel Danet, Andrei J Automat Chem Research Article An automatic procedure for calibration in continuous-flow systems is proposed. A flow gradient unit in the sample channel, controlled via a switching valve, delivers a concentration gradient of the standard so that the standard concentration varies with time after the flow-rate gradient is started. Thus, the signal (absorbance)- concentration relationship can be determined and checked for (recalibration) as frequently as required. The procedure was applied to a simulated continuous monitoring of hydrazine in waters, as well as to specific water samples that were spiked with hydrazine at different concentrations. Hindawi Publishing Corporation 1995 /pmc/articles/PMC2548111/ /pubmed/18924785 http://dx.doi.org/10.1155/S1463924695000022 Text en Copyright © 1995 Hindawi Publishing Corporation. http://creativecommons.org/licenses/by/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Agudo, Manuel
Ríos, Angel
Valcárcel, Miguel
Danet, Andrei
Automatic calibration for on-line process monitoring in continuous-flow systems
title Automatic calibration for on-line process monitoring in continuous-flow systems
title_full Automatic calibration for on-line process monitoring in continuous-flow systems
title_fullStr Automatic calibration for on-line process monitoring in continuous-flow systems
title_full_unstemmed Automatic calibration for on-line process monitoring in continuous-flow systems
title_short Automatic calibration for on-line process monitoring in continuous-flow systems
title_sort automatic calibration for on-line process monitoring in continuous-flow systems
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2548111/
https://www.ncbi.nlm.nih.gov/pubmed/18924785
http://dx.doi.org/10.1155/S1463924695000022
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AT riosangel automaticcalibrationforonlineprocessmonitoringincontinuousflowsystems
AT valcarcelmiguel automaticcalibrationforonlineprocessmonitoringincontinuousflowsystems
AT danetandrei automaticcalibrationforonlineprocessmonitoringincontinuousflowsystems

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