Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction

The separation of the enantiomers of a group of organophosphorus pesticides (OPs) has been investigated by electrokinetic chromatography (EKC) using different anionic cyclodextrins as chiral selectors. The use of a 25 mM Tris buffer (pH 7.0), 20 mM in CM-β-CD together with an applied voltage of 24 k...

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Autores: García Ruiz, Carmen|||0000-0001-5925-3449, Álvarez Llamas, Gloria, Puerta, Ángel, Blanco, Elisa, Sanz Medel, Alfredo, Marina Alegre, María Luisa|||0000-0002-5583-1624
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/1351
Acceso en línea:http://hdl.handle.net/10017/1351
https://dx.doi.org/10.1016/j.aca.2005.04.027
Access Level:acceso abierto
Palabra clave:Enantiomeric separation
Organophosphorus pesticides
Capillary electrophoresis
Malathion
Solid-phase extraction
Ciencia
Química analítica e industrial
Science
Chemistry, analytic and technical
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spelling Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extractionGarcía Ruiz, Carmen|||0000-0001-5925-3449Álvarez Llamas, GloriaPuerta, ÁngelBlanco, ElisaSanz Medel, AlfredoMarina Alegre, María Luisa|||0000-0002-5583-1624Enantiomeric separationOrganophosphorus pesticidesCapillary electrophoresisMalathionSolid-phase extractionCienciaQuímica analítica e industrialScienceChemistry, analytic and technicalThe separation of the enantiomers of a group of organophosphorus pesticides (OPs) has been investigated by electrokinetic chromatography (EKC) using different anionic cyclodextrins as chiral selectors. The use of a 25 mM Tris buffer (pH 7.0), 20 mM in CM-β-CD together with an applied voltage of 24 kV and a temperature of 25 °C enabled the individual enantiomeric separation of malathion and phenthoate each one into its two enantiomers, the partial separation of the enantiomers of phenamiphos and the separation of three of the four enantiomers of isomalathion. Since naled is very reactive in aqueous solutions, its enantiomeric separation achieved in about 8 min in 25 mM borate buffer at pH 9 with 10 mM CM-β-CD resulted in the observation of a broad peak due to degradation products. A preconcentration step by disk solid-phase extraction was studied and used together with the chiral EKC method developed for the enantiomeric separation of malathion in order to determine this pesticide in tap water samples spiked at the μg mL−1 level. Finally, the precision and recovery of the method was established.Authors thank the Ministry of Science and Technology (Spain) for the research project BQU2003-03638. C. García Ruiz also thanks this Ministry for the Ramón y Cajal program (RYC-2003-001)Elsevier20052005-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/1351https://dx.doi.org/10.1016/j.aca.2005.04.027reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengMICYT Not available BQU2003-03638 CROMATOGRAFÍA ELECTROCINÉTICA: UNA PODEROSA HERRAMIENTA PARA LA SEPARACIÓN ENANTIOMÉRICA DE COMPUESTOS QUIRALES CON APLICACIÓN A LA DETERMINACIÓN DE LA PUREZA ENANTIOMÉRICAMinisterio de Educación y Ciencia Not available RYC-2003-001 RYC-2003-001open accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/13512026-06-18T11:13:07Z
dc.title.none.fl_str_mv Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
title Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
spellingShingle Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
García Ruiz, Carmen|||0000-0001-5925-3449
Enantiomeric separation
Organophosphorus pesticides
Capillary electrophoresis
Malathion
Solid-phase extraction
Ciencia
Química analítica e industrial
Science
Chemistry, analytic and technical
title_short Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
title_full Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
title_fullStr Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
title_full_unstemmed Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
title_sort Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis. Application to the determination of malathion in water samples after preconcentration by off-line solid-phase extraction
dc.creator.none.fl_str_mv García Ruiz, Carmen|||0000-0001-5925-3449
Álvarez Llamas, Gloria
Puerta, Ángel
Blanco, Elisa
Sanz Medel, Alfredo
Marina Alegre, María Luisa|||0000-0002-5583-1624
author García Ruiz, Carmen|||0000-0001-5925-3449
author_facet García Ruiz, Carmen|||0000-0001-5925-3449
Álvarez Llamas, Gloria
Puerta, Ángel
Blanco, Elisa
Sanz Medel, Alfredo
Marina Alegre, María Luisa|||0000-0002-5583-1624
author_role author
author2 Álvarez Llamas, Gloria
Puerta, Ángel
Blanco, Elisa
Sanz Medel, Alfredo
Marina Alegre, María Luisa|||0000-0002-5583-1624
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Enantiomeric separation
Organophosphorus pesticides
Capillary electrophoresis
Malathion
Solid-phase extraction
Ciencia
Química analítica e industrial
Science
Chemistry, analytic and technical
topic Enantiomeric separation
Organophosphorus pesticides
Capillary electrophoresis
Malathion
Solid-phase extraction
Ciencia
Química analítica e industrial
Science
Chemistry, analytic and technical
description The separation of the enantiomers of a group of organophosphorus pesticides (OPs) has been investigated by electrokinetic chromatography (EKC) using different anionic cyclodextrins as chiral selectors. The use of a 25 mM Tris buffer (pH 7.0), 20 mM in CM-β-CD together with an applied voltage of 24 kV and a temperature of 25 °C enabled the individual enantiomeric separation of malathion and phenthoate each one into its two enantiomers, the partial separation of the enantiomers of phenamiphos and the separation of three of the four enantiomers of isomalathion. Since naled is very reactive in aqueous solutions, its enantiomeric separation achieved in about 8 min in 25 mM borate buffer at pH 9 with 10 mM CM-β-CD resulted in the observation of a broad peak due to degradation products. A preconcentration step by disk solid-phase extraction was studied and used together with the chiral EKC method developed for the enantiomeric separation of malathion in order to determine this pesticide in tap water samples spiked at the μg mL−1 level. Finally, the precision and recovery of the method was established.
publishDate 2005
dc.date.none.fl_str_mv 2005
2005-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/1351
https://dx.doi.org/10.1016/j.aca.2005.04.027
url http://hdl.handle.net/10017/1351
https://dx.doi.org/10.1016/j.aca.2005.04.027
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv MICYT Not available BQU2003-03638 CROMATOGRAFÍA ELECTROCINÉTICA: UNA PODEROSA HERRAMIENTA PARA LA SEPARACIÓN ENANTIOMÉRICA DE COMPUESTOS QUIRALES CON APLICACIÓN A LA DETERMINACIÓN DE LA PUREZA ENANTIOMÉRICA
Ministerio de Educación y Ciencia Not available RYC-2003-001 RYC-2003-001
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
repository.name.fl_str_mv
repository.mail.fl_str_mv
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