Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry
An on-line pre-concentration system for electrothermal atomic absorption spectrometry was developed. A miniature silica C-18 column was inserted at the tip of the autosampler arm. A modification of the tubing line of the autosampler allowed either the flow of the sample through the column or the ope...
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1991
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ftunivtorino:oai:iris.unito.it:2318/110974 2023-10-29T02:32:19+01:00 Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry PORTA, Valerio ABOLLINO, Ornella MENTASTI, Edoardo SARZANINI, Corrado V. Porta O. Abollino E. Mentasti C. Sarzanini 1991 http://hdl.handle.net/2318/110974 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:A1991FJ27600007 volume:6 firstpage:119 lastpage:122 journal:JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY http://hdl.handle.net/2318/110974 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0000547559 Ultra-trace determination enrichment metal sea-water electrothermal atomic absorption spectrometry info:eu-repo/semantics/article 1991 ftunivtorino 2023-10-03T22:32:06Z An on-line pre-concentration system for electrothermal atomic absorption spectrometry was developed. A miniature silica C-18 column was inserted at the tip of the autosampler arm. A modification of the tubing line of the autosampler allowed either the flow of the sample through the column or the operation of the autosampler in the normal mode. The retention of the metal ions in the form of complexes on the microcolumn was achieved by using pyrrolidin-l-yl dithioformate as the complexing agent; acetonitrile was then used for the elution. The direct injection of the eluate into the graphite furnace gave high pre-concentration factors, ranging between 20 and 225, which are sufficient for the determination of Cd, Pb, Cu, Ni, Co and Fe in Antarctic sea-water. The blank level was very low and the detection limits ranged from 0.4 ng l-1 (Cd) to 25 ng l-1 (Fe). Article in Journal/Newspaper Antarc* Antarctic Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
institution |
Open Polar |
collection |
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
English |
topic |
Ultra-trace determination enrichment metal sea-water electrothermal atomic absorption spectrometry |
spellingShingle |
Ultra-trace determination enrichment metal sea-water electrothermal atomic absorption spectrometry PORTA, Valerio ABOLLINO, Ornella MENTASTI, Edoardo SARZANINI, Corrado Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
topic_facet |
Ultra-trace determination enrichment metal sea-water electrothermal atomic absorption spectrometry |
description |
An on-line pre-concentration system for electrothermal atomic absorption spectrometry was developed. A miniature silica C-18 column was inserted at the tip of the autosampler arm. A modification of the tubing line of the autosampler allowed either the flow of the sample through the column or the operation of the autosampler in the normal mode. The retention of the metal ions in the form of complexes on the microcolumn was achieved by using pyrrolidin-l-yl dithioformate as the complexing agent; acetonitrile was then used for the elution. The direct injection of the eluate into the graphite furnace gave high pre-concentration factors, ranging between 20 and 225, which are sufficient for the determination of Cd, Pb, Cu, Ni, Co and Fe in Antarctic sea-water. The blank level was very low and the detection limits ranged from 0.4 ng l-1 (Cd) to 25 ng l-1 (Fe). |
author2 |
V. Porta O. Abollino E. Mentasti C. Sarzanini |
format |
Article in Journal/Newspaper |
author |
PORTA, Valerio ABOLLINO, Ornella MENTASTI, Edoardo SARZANINI, Corrado |
author_facet |
PORTA, Valerio ABOLLINO, Ornella MENTASTI, Edoardo SARZANINI, Corrado |
author_sort |
PORTA, Valerio |
title |
Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
title_short |
Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
title_full |
Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
title_fullStr |
Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
title_full_unstemmed |
Determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
title_sort |
determination of ultra-trace levels of metal ions in sea-water with on-line preconcentration and electrothermal atomic absorption spectrometry |
publishDate |
1991 |
url |
http://hdl.handle.net/2318/110974 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:A1991FJ27600007 volume:6 firstpage:119 lastpage:122 journal:JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY http://hdl.handle.net/2318/110974 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0000547559 |
_version_ |
1781053613270892544 |