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Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry

Flow-injection manifolds are described which allow the preconcentration of lead for flame atomic absorption determinations, using columns contained within the sample loop of an injection valve. An interface was designed which allowed the valves and pump in the system to be controlled by an autosampl...

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Detalles Bibliográficos
Autores principales: Bysouth, S. R., Tyson, J. F., Stockwell, P. B.
Formato: Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 1989
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2547783/
https://www.ncbi.nlm.nih.gov/pubmed/18925232
http://dx.doi.org/10.1155/S1463924689000088
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author Bysouth, S. R.
Tyson, J. F.
Stockwell, P. B.
author_facet Bysouth, S. R.
Tyson, J. F.
Stockwell, P. B.
author_sort Bysouth, S. R.
collection PubMed
description Flow-injection manifolds are described which allow the preconcentration of lead for flame atomic absorption determinations, using columns contained within the sample loop of an injection valve. An interface was designed which allowed the valves and pump in the system to be controlled by an autosampler which enabled precise timing of preconcentration and elution steps. The effects of sample flow rate, buffer pH and buffer type for preconcentration and eluent concentration and flow rate were investigated in order to obtain optimum performance of the system. A 50-times improvement in detection limits over conventional sample introduction was obtained for a sample volume of approximately 12 ml, preconcentrated for 150 s. The injection of eluent, as opposed to the use of a continuously flowing eluent stream, enabled this reagent to be conserved.
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spelling pubmed-25477832008-10-16 Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry Bysouth, S. R. Tyson, J. F. Stockwell, P. B. J Automat Chem Research Article Flow-injection manifolds are described which allow the preconcentration of lead for flame atomic absorption determinations, using columns contained within the sample loop of an injection valve. An interface was designed which allowed the valves and pump in the system to be controlled by an autosampler which enabled precise timing of preconcentration and elution steps. The effects of sample flow rate, buffer pH and buffer type for preconcentration and eluent concentration and flow rate were investigated in order to obtain optimum performance of the system. A 50-times improvement in detection limits over conventional sample introduction was obtained for a sample volume of approximately 12 ml, preconcentrated for 150 s. The injection of eluent, as opposed to the use of a continuously flowing eluent stream, enabled this reagent to be conserved. Hindawi Publishing Corporation 1989 /pmc/articles/PMC2547783/ /pubmed/18925232 http://dx.doi.org/10.1155/S1463924689000088 Text en Copyright © 1989 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
Bysouth, S. R.
Tyson, J. F.
Stockwell, P. B.
Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title_full Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title_fullStr Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title_full_unstemmed Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title_short Design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
title_sort design and operation of an autosampler controlled flow-injection preconcentration system for lead determination by flame atomic absorption spectrometry
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2547783/
https://www.ncbi.nlm.nih.gov/pubmed/18925232
http://dx.doi.org/10.1155/S1463924689000088
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