On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water

Autores
Parodi, Maria Belen; Londonio, Juan Agustín; Polla, Griselda Ines; Savio, Marianela; Smichowski, Patricia Nora
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A study was carried out to investigate the concentrations of Hg(II) in different categories of water samples at ng L1 levels. The capabilities of oxidised carbon nanotubes (ox-CNTs) were studied to assess if this substrate serves as an efficient material for Hg(II) preconcentration using an on-line flow injection cold vapour-atomic absorption spectrometry (FI-CV-AAS) system. Carbon nanotubes are characterized by a marked tendency to aggregate, which negatively affects the retention of Hg whenever integrated in flow systems as a packed column. For this reason, the preconcentration was carried out in a microcolumn filled with a mixture of ox-CNTs and a low molecular weight polyethylene. The preparation of the microcolumn was studied in detail. Concerning column design, the best performance was achieved when packing the substrate in a microcolumn of 2.25 mm (i.d.) 20 mm length. The effect of chemical and physical parameters including the pH of the solutions, the eluent type and the concentration was systematically examined. Mercury was retained at pH 5.0 and 15% (v/v) HCl was the best alternative for Hg(II) elution. Under optimal conditions, the adsorption capacity of the substrate was found to be 3.2 mg g1 reaching a preconcentration factor (PF) of 150. The high adsorption capacity of this substrate allowed reaching a detection limit (3s) of 1.9 ng L1, when using a sorbent column containing only 1.0 mg of ox-CNTs. The limit of quantification (10s) resulted to be 6.3 ng L1. Precision, expressed as relative standard deviation (RSD), turned out to be 1.6% at the 0.1 mg L1 level (n ¼ 8). The system was evaluated for quantitative determination of Hg in river water, sea water and effluents.
Fil: Parodi, Maria Belen. Instituto Nacional de Tecnología Industrial; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Londonio, Juan Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina
Fil: Polla, Griselda Ines. Comisión Nacional de Energía Atómica; Argentina
Fil: Savio, Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Smichowski, Patricia Nora. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina
Materia
Mercury
On line flow injection solid phase extraction
Carbon nanotube
Cold vapour atomic absorption
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31818
Acceder
id CONICETDig_d440c9103685cdd4198596702daed837
oai_identifier_str oai:ri.conicet.gov.ar:11336/31818
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of waterParodi, Maria BelenLondonio, Juan AgustínPolla, Griselda InesSavio, MarianelaSmichowski, Patricia NoraMercuryOn line flow injection solid phase extractionCarbon nanotubeCold vapour atomic absorptionhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A study was carried out to investigate the concentrations of Hg(II) in different categories of water samples at ng L1 levels. The capabilities of oxidised carbon nanotubes (ox-CNTs) were studied to assess if this substrate serves as an efficient material for Hg(II) preconcentration using an on-line flow injection cold vapour-atomic absorption spectrometry (FI-CV-AAS) system. Carbon nanotubes are characterized by a marked tendency to aggregate, which negatively affects the retention of Hg whenever integrated in flow systems as a packed column. For this reason, the preconcentration was carried out in a microcolumn filled with a mixture of ox-CNTs and a low molecular weight polyethylene. The preparation of the microcolumn was studied in detail. Concerning column design, the best performance was achieved when packing the substrate in a microcolumn of 2.25 mm (i.d.) 20 mm length. The effect of chemical and physical parameters including the pH of the solutions, the eluent type and the concentration was systematically examined. Mercury was retained at pH 5.0 and 15% (v/v) HCl was the best alternative for Hg(II) elution. Under optimal conditions, the adsorption capacity of the substrate was found to be 3.2 mg g1 reaching a preconcentration factor (PF) of 150. The high adsorption capacity of this substrate allowed reaching a detection limit (3s) of 1.9 ng L1, when using a sorbent column containing only 1.0 mg of ox-CNTs. The limit of quantification (10s) resulted to be 6.3 ng L1. Precision, expressed as relative standard deviation (RSD), turned out to be 1.6% at the 0.1 mg L1 level (n ¼ 8). The system was evaluated for quantitative determination of Hg in river water, sea water and effluents.Fil: Parodi, Maria Belen. Instituto Nacional de Tecnología Industrial; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Londonio, Juan Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; ArgentinaFil: Polla, Griselda Ines. Comisión Nacional de Energía Atómica; ArgentinaFil: Savio, Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; ArgentinaFil: Smichowski, Patricia Nora. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; ArgentinaRoyal Society of Chemistry2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31818Smichowski, Patricia Nora; Savio, Marianela; Polla, Griselda Ines; Londonio, Juan Agustín; Parodi, Maria Belen; On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water; Royal Society of Chemistry; Journal of Analytical Atomic Spectrometry; 29; 2-2014; 880-8850267-9477CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2014/ja/c3ja50396h#!divAbstractinfo:eu-repo/semantics/altIdentifier/doi/10.1039/C3JA50396Hinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:54:04Zoai:ri.conicet.gov.ar:11336/31818instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 10:54:04.443CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
title On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
spellingShingle On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
Parodi, Maria Belen
Mercury
On line flow injection solid phase extraction
Carbon nanotube
Cold vapour atomic absorption
title_short On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
title_full On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
title_fullStr On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
title_full_unstemmed On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
title_sort On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water
dc.creator.none.fl_str_mv Parodi, Maria Belen
Londonio, Juan Agustín
Polla, Griselda Ines
Savio, Marianela
Smichowski, Patricia Nora
author Parodi, Maria Belen
author_facet Parodi, Maria Belen
Londonio, Juan Agustín
Polla, Griselda Ines
Savio, Marianela
Smichowski, Patricia Nora
author_role author
author2 Londonio, Juan Agustín
Polla, Griselda Ines
Savio, Marianela
Smichowski, Patricia Nora
author2_role author
author
author
author
dc.subject.none.fl_str_mv Mercury
On line flow injection solid phase extraction
Carbon nanotube
Cold vapour atomic absorption
topic Mercury
On line flow injection solid phase extraction
Carbon nanotube
Cold vapour atomic absorption
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A study was carried out to investigate the concentrations of Hg(II) in different categories of water samples at ng L1 levels. The capabilities of oxidised carbon nanotubes (ox-CNTs) were studied to assess if this substrate serves as an efficient material for Hg(II) preconcentration using an on-line flow injection cold vapour-atomic absorption spectrometry (FI-CV-AAS) system. Carbon nanotubes are characterized by a marked tendency to aggregate, which negatively affects the retention of Hg whenever integrated in flow systems as a packed column. For this reason, the preconcentration was carried out in a microcolumn filled with a mixture of ox-CNTs and a low molecular weight polyethylene. The preparation of the microcolumn was studied in detail. Concerning column design, the best performance was achieved when packing the substrate in a microcolumn of 2.25 mm (i.d.) 20 mm length. The effect of chemical and physical parameters including the pH of the solutions, the eluent type and the concentration was systematically examined. Mercury was retained at pH 5.0 and 15% (v/v) HCl was the best alternative for Hg(II) elution. Under optimal conditions, the adsorption capacity of the substrate was found to be 3.2 mg g1 reaching a preconcentration factor (PF) of 150. The high adsorption capacity of this substrate allowed reaching a detection limit (3s) of 1.9 ng L1, when using a sorbent column containing only 1.0 mg of ox-CNTs. The limit of quantification (10s) resulted to be 6.3 ng L1. Precision, expressed as relative standard deviation (RSD), turned out to be 1.6% at the 0.1 mg L1 level (n ¼ 8). The system was evaluated for quantitative determination of Hg in river water, sea water and effluents.
Fil: Parodi, Maria Belen. Instituto Nacional de Tecnología Industrial; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Londonio, Juan Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina
Fil: Polla, Griselda Ines. Comisión Nacional de Energía Atómica; Argentina
Fil: Savio, Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
Fil: Smichowski, Patricia Nora. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia Química. CAC; Argentina
description A study was carried out to investigate the concentrations of Hg(II) in different categories of water samples at ng L1 levels. The capabilities of oxidised carbon nanotubes (ox-CNTs) were studied to assess if this substrate serves as an efficient material for Hg(II) preconcentration using an on-line flow injection cold vapour-atomic absorption spectrometry (FI-CV-AAS) system. Carbon nanotubes are characterized by a marked tendency to aggregate, which negatively affects the retention of Hg whenever integrated in flow systems as a packed column. For this reason, the preconcentration was carried out in a microcolumn filled with a mixture of ox-CNTs and a low molecular weight polyethylene. The preparation of the microcolumn was studied in detail. Concerning column design, the best performance was achieved when packing the substrate in a microcolumn of 2.25 mm (i.d.) 20 mm length. The effect of chemical and physical parameters including the pH of the solutions, the eluent type and the concentration was systematically examined. Mercury was retained at pH 5.0 and 15% (v/v) HCl was the best alternative for Hg(II) elution. Under optimal conditions, the adsorption capacity of the substrate was found to be 3.2 mg g1 reaching a preconcentration factor (PF) of 150. The high adsorption capacity of this substrate allowed reaching a detection limit (3s) of 1.9 ng L1, when using a sorbent column containing only 1.0 mg of ox-CNTs. The limit of quantification (10s) resulted to be 6.3 ng L1. Precision, expressed as relative standard deviation (RSD), turned out to be 1.6% at the 0.1 mg L1 level (n ¼ 8). The system was evaluated for quantitative determination of Hg in river water, sea water and effluents.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31818
Smichowski, Patricia Nora; Savio, Marianela; Polla, Griselda Ines; Londonio, Juan Agustín; Parodi, Maria Belen; On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water; Royal Society of Chemistry; Journal of Analytical Atomic Spectrometry; 29; 2-2014; 880-885
0267-9477
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31818
identifier_str_mv Smichowski, Patricia Nora; Savio, Marianela; Polla, Griselda Ines; Londonio, Juan Agustín; Parodi, Maria Belen; On-line flow injection solid phase extraction using oxidised carbon nanotubes as the substrate for cold vapour-atomic absorption determination of Hg(II) in different kinds of water; Royal Society of Chemistry; Journal of Analytical Atomic Spectrometry; 29; 2-2014; 880-885
0267-9477
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1039/C3JA50396H
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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application/pdf
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dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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