Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.

Autores
Diaz Kirmser, Elena M.; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Rosso, Janina Alejandra
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Activated sodium peroxydisulfate has the potential to in situ destruct many organic contaminants because of the generation of the stronger oxidant sulfate radical. From photochemical activation of peroxydisulfate in flash-photolysis experiments, the bimolecular rate constants for the reaction of sulfate radical with glyphosate (1.6 108 M-1 s-1 ) and paraquat (1.2 109 M-1 s-1 ) at 25 C were obtained. Thermal activation of peroxydisulfate was shown to degrade the herbicides clomazone, paraquat, and glyphosate. Although the herbicide degradation was observed to take place in less than 1 h, the mineralization of the organic carbon required longer reaction times, because of the formation of stable organic intermediates. For similar initial total organic carbon (TOC) values, TOC profiles were similar for experiments with different substrates (the herbicides, humic acids, and a mixture of glyphosate and humic acids), which indicates that the mineralization of all of the samples is limited by the production of SO4 • - radicals. A linear correlation between the initial amount of SO4 • - needed per mole of C and the average oxidation state was found.
Fil: Diaz Kirmser, Elena M.. Universidad Nacional de Asunción; Paraguay
Fil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Materia
PEROXYDISULFATE
SULFATE RADICAL
GLYPHOSATE
CLOMAZONE
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:11336/278655
Acceder
id CONICETDig_07e27122d7d7e661bc4ce65667e13eae
oai_identifier_str oai:ri.conicet.gov.ar:11336/278655
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.Diaz Kirmser, Elena M.Martire, Daniel OsvaldoGonzalez, Monica CristinaRosso, Janina AlejandraPEROXYDISULFATESULFATE RADICALGLYPHOSATECLOMAZONEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Activated sodium peroxydisulfate has the potential to in situ destruct many organic contaminants because of the generation of the stronger oxidant sulfate radical. From photochemical activation of peroxydisulfate in flash-photolysis experiments, the bimolecular rate constants for the reaction of sulfate radical with glyphosate (1.6 108 M-1 s-1 ) and paraquat (1.2 109 M-1 s-1 ) at 25 C were obtained. Thermal activation of peroxydisulfate was shown to degrade the herbicides clomazone, paraquat, and glyphosate. Although the herbicide degradation was observed to take place in less than 1 h, the mineralization of the organic carbon required longer reaction times, because of the formation of stable organic intermediates. For similar initial total organic carbon (TOC) values, TOC profiles were similar for experiments with different substrates (the herbicides, humic acids, and a mixture of glyphosate and humic acids), which indicates that the mineralization of all of the samples is limited by the production of SO4 • - radicals. A linear correlation between the initial amount of SO4 • - needed per mole of C and the average oxidation state was found.Fil: Diaz Kirmser, Elena M.. Universidad Nacional de Asunción; ParaguayFil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaAmerican Chemical Society2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278655Diaz Kirmser, Elena M.; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Rosso, Janina Alejandra; Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.; American Chemical Society; Journal of Agricultural and Food Chemistry; 58; 24; 11-2010; 12858-128620021-8561CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jf103054hinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jf103054hinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-26T09:59:49Zoai:ri.conicet.gov.ar:11336/278655instacron: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:34982026-02-26 09:59:49.577CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
title Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
spellingShingle Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
Diaz Kirmser, Elena M.
PEROXYDISULFATE
SULFATE RADICAL
GLYPHOSATE
CLOMAZONE
title_short Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
title_full Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
title_fullStr Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
title_full_unstemmed Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
title_sort Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.
dc.creator.none.fl_str_mv Diaz Kirmser, Elena M.
Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
Rosso, Janina Alejandra
author Diaz Kirmser, Elena M.
author_facet Diaz Kirmser, Elena M.
Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
Rosso, Janina Alejandra
author_role author
author2 Martire, Daniel Osvaldo
Gonzalez, Monica Cristina
Rosso, Janina Alejandra
author2_role author
author
author
dc.subject.none.fl_str_mv PEROXYDISULFATE
SULFATE RADICAL
GLYPHOSATE
CLOMAZONE
topic PEROXYDISULFATE
SULFATE RADICAL
GLYPHOSATE
CLOMAZONE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Activated sodium peroxydisulfate has the potential to in situ destruct many organic contaminants because of the generation of the stronger oxidant sulfate radical. From photochemical activation of peroxydisulfate in flash-photolysis experiments, the bimolecular rate constants for the reaction of sulfate radical with glyphosate (1.6 108 M-1 s-1 ) and paraquat (1.2 109 M-1 s-1 ) at 25 C were obtained. Thermal activation of peroxydisulfate was shown to degrade the herbicides clomazone, paraquat, and glyphosate. Although the herbicide degradation was observed to take place in less than 1 h, the mineralization of the organic carbon required longer reaction times, because of the formation of stable organic intermediates. For similar initial total organic carbon (TOC) values, TOC profiles were similar for experiments with different substrates (the herbicides, humic acids, and a mixture of glyphosate and humic acids), which indicates that the mineralization of all of the samples is limited by the production of SO4 • - radicals. A linear correlation between the initial amount of SO4 • - needed per mole of C and the average oxidation state was found.
Fil: Diaz Kirmser, Elena M.. Universidad Nacional de Asunción; Paraguay
Fil: Martire, Daniel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Gonzalez, Monica Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Rosso, Janina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
description Activated sodium peroxydisulfate has the potential to in situ destruct many organic contaminants because of the generation of the stronger oxidant sulfate radical. From photochemical activation of peroxydisulfate in flash-photolysis experiments, the bimolecular rate constants for the reaction of sulfate radical with glyphosate (1.6 108 M-1 s-1 ) and paraquat (1.2 109 M-1 s-1 ) at 25 C were obtained. Thermal activation of peroxydisulfate was shown to degrade the herbicides clomazone, paraquat, and glyphosate. Although the herbicide degradation was observed to take place in less than 1 h, the mineralization of the organic carbon required longer reaction times, because of the formation of stable organic intermediates. For similar initial total organic carbon (TOC) values, TOC profiles were similar for experiments with different substrates (the herbicides, humic acids, and a mixture of glyphosate and humic acids), which indicates that the mineralization of all of the samples is limited by the production of SO4 • - radicals. A linear correlation between the initial amount of SO4 • - needed per mole of C and the average oxidation state was found.
publishDate 2010
dc.date.none.fl_str_mv 2010-11
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/11336/278655
Diaz Kirmser, Elena M.; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Rosso, Janina Alejandra; Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.; American Chemical Society; Journal of Agricultural and Food Chemistry; 58; 24; 11-2010; 12858-12862
0021-8561
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278655
identifier_str_mv Diaz Kirmser, Elena M.; Martire, Daniel Osvaldo; Gonzalez, Monica Cristina; Rosso, Janina Alejandra; Degradation of the herbicides clomazone, paraquat and glyphosate by thermally activated peroxydisulfate.; American Chemical Society; Journal of Agricultural and Food Chemistry; 58; 24; 11-2010; 12858-12862
0021-8561
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jf103054h
info:eu-repo/semantics/altIdentifier/doi/10.1021/jf103054h
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
_version_ 1858304882020188160
score 13.176822

Publicaciones similares