On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry

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Selenium was determined in samples with high copper and iron contents by hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES) after flow-injection (FI) on-line copper and iron removal and selenium(VI) reduction. A Dowex 1X-8 anion-exchange microcolumn was used for...

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Autores principales: Stripeikis, J., Tudino, M., Troccoli, O., Wuilloud, R., Olsina, R., Martinez, L.
Formato: JOUR
Materias:
Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES)
On-line pre-reduction
On-line removal of Cu and Fe interferences
Selenium determination
Copper
Inductively coupled plasma
Iron
Polytetrafluoroethylenes
Spectrometry
Inductively coupled plasma optical emission spectrometry
Selenium
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05848547_v56_n1_p93_Stripeikis
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_05848547_v56_n1_p93_Stripeikis2023-10-03T15:36:04Z On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry Stripeikis, J. Tudino, M. Troccoli, O. Wuilloud, R. Olsina, R. Martinez, L. Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES) On-line pre-reduction On-line removal of Cu and Fe interferences Selenium determination Copper Inductively coupled plasma Iron Polytetrafluoroethylenes Spectrometry Inductively coupled plasma optical emission spectrometry Selenium Selenium was determined in samples with high copper and iron contents by hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES) after flow-injection (FI) on-line copper and iron removal and selenium(VI) reduction. A Dowex 1X-8 anion-exchange microcolumn was used for the separation of selenium from copper and iron as their chloro-complexes. Se(VI) was then reduced on-line by heating a PTFE coiled reactor (150 cm long, 0.7 mm i.d.) in a 100°C water bath. After reduction of Se(VI), a 900-μl sample was injected into the carrier stream containing hydrochloric acid and sodium tetrahydroborate to generate the hydride. A limit of detection of 0.4 μg l-1 (RSD 2.3% for 20 μg l-1 selenium) was obtained. The application of the method to Geochemical Standard Reference Samples and copper metal reference materials (MBH) demonstrated that results were in good statistical accordance with certified values. © 2001 Elsevier Science B.V. Fil:Stripeikis, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tudino, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Troccoli, O. 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_05848547_v56_n1_p93_Stripeikis
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES)
On-line pre-reduction
On-line removal of Cu and Fe interferences
Selenium determination
Copper
Inductively coupled plasma
Iron
Polytetrafluoroethylenes
Spectrometry
Inductively coupled plasma optical emission spectrometry
Selenium
spellingShingle Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES)
On-line pre-reduction
On-line removal of Cu and Fe interferences
Selenium determination
Copper
Inductively coupled plasma
Iron
Polytetrafluoroethylenes
Spectrometry
Inductively coupled plasma optical emission spectrometry
Selenium
Stripeikis, J.
Tudino, M.
Troccoli, O.
Wuilloud, R.
Olsina, R.
Martinez, L.
On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
topic_facet Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES)
On-line pre-reduction
On-line removal of Cu and Fe interferences
Selenium determination
Copper
Inductively coupled plasma
Iron
Polytetrafluoroethylenes
Spectrometry
Inductively coupled plasma optical emission spectrometry
Selenium
description Selenium was determined in samples with high copper and iron contents by hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES) after flow-injection (FI) on-line copper and iron removal and selenium(VI) reduction. A Dowex 1X-8 anion-exchange microcolumn was used for the separation of selenium from copper and iron as their chloro-complexes. Se(VI) was then reduced on-line by heating a PTFE coiled reactor (150 cm long, 0.7 mm i.d.) in a 100°C water bath. After reduction of Se(VI), a 900-μl sample was injected into the carrier stream containing hydrochloric acid and sodium tetrahydroborate to generate the hydride. A limit of detection of 0.4 μg l-1 (RSD 2.3% for 20 μg l-1 selenium) was obtained. The application of the method to Geochemical Standard Reference Samples and copper metal reference materials (MBH) demonstrated that results were in good statistical accordance with certified values. © 2001 Elsevier Science B.V.
format JOUR
author Stripeikis, J.
Tudino, M.
Troccoli, O.
Wuilloud, R.
Olsina, R.
Martinez, L.
author_facet Stripeikis, J.
Tudino, M.
Troccoli, O.
Wuilloud, R.
Olsina, R.
Martinez, L.
author_sort Stripeikis, J.
title On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
title_short On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
title_full On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
title_fullStr On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
title_full_unstemmed On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
title_sort on-line copper and iron removal and selenium(vi) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
url http://hdl.handle.net/20.500.12110/paper_05848547_v56_n1_p93_Stripeikis
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