Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical

Autores
Caregnato, Paula; Rosso, Janina Alejandra; Soler, Juán M.; Arques, Antonio; Mártire, Daniel Osvaldo; González, Mónica Cristina
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The reaction of phosphor-containing pesticides such as methidathion (MT) and dimethoate (DM) with dichloride radical anions (Cl₂˙⁻) was investigated. The second order rate constants (1.3 ± 0.4) × 10⁸ and (1.1 ± 0.4) × 10⁸ M⁻¹ s⁻¹ were determined for the reaction of Cl₂˙⁻ with MT and DM, respectively. A reaction mechanism involving an initial charge transfer from the sulfide groups of the insecticides to Cl₂˙⁻ is proposed and supported by the identified transient intermediates and reaction products. The formation of chlorinated byproducts was determined. The unexpected consequences of an efficient Cl₂˙⁻ reactivity towards MT and DM on the degradation capacity by Advanced Oxidation Procedures applied to polluted waters containing the insecticides and Cl⁻ anions is discussed.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Organophosphorous pesticides
Degradation
Chloride anion
Flash-photolysis
Chlorinated byproducts
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/128864
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/128864
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radicalCaregnato, PaulaRosso, Janina AlejandraSoler, Juán M.Arques, AntonioMártire, Daniel OsvaldoGonzález, Mónica CristinaCiencias ExactasQuímicaOrganophosphorous pesticidesDegradationChloride anionFlash-photolysisChlorinated byproductsThe reaction of phosphor-containing pesticides such as methidathion (MT) and dimethoate (DM) with dichloride radical anions (Cl₂˙⁻) was investigated. The second order rate constants (1.3 ± 0.4) × 10⁸ and (1.1 ± 0.4) × 10⁸ M⁻¹ s⁻¹ were determined for the reaction of Cl₂˙⁻ with MT and DM, respectively. A reaction mechanism involving an initial charge transfer from the sulfide groups of the insecticides to Cl₂˙⁻ is proposed and supported by the identified transient intermediates and reaction products. The formation of chlorinated byproducts was determined. The unexpected consequences of an efficient Cl₂˙⁻ reactivity towards MT and DM on the degradation capacity by Advanced Oxidation Procedures applied to polluted waters containing the insecticides and Cl⁻ anions is discussed.Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf351-362http://sedici.unlp.edu.ar/handle/10915/128864enginfo:eu-repo/semantics/altIdentifier/issn/1879-2448info:eu-repo/semantics/altIdentifier/issn/0043-1354info:eu-repo/semantics/altIdentifier/pmid/23137829info:eu-repo/semantics/altIdentifier/doi/10.1016/j.watres.2012.10.018info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:11:52Zoai:sedici.unlp.edu.ar:10915/128864Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:11:52.748SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
title Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
spellingShingle Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
Caregnato, Paula
Ciencias Exactas
Química
Organophosphorous pesticides
Degradation
Chloride anion
Flash-photolysis
Chlorinated byproducts
title_short Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
title_full Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
title_fullStr Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
title_full_unstemmed Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
title_sort Chloride anion effect on the advanced oxidation processes of methidathion and dimethoate: role of Cl₂˙⁻ radical
dc.creator.none.fl_str_mv Caregnato, Paula
Rosso, Janina Alejandra
Soler, Juán M.
Arques, Antonio
Mártire, Daniel Osvaldo
González, Mónica Cristina
author Caregnato, Paula
author_facet Caregnato, Paula
Rosso, Janina Alejandra
Soler, Juán M.
Arques, Antonio
Mártire, Daniel Osvaldo
González, Mónica Cristina
author_role author
author2 Rosso, Janina Alejandra
Soler, Juán M.
Arques, Antonio
Mártire, Daniel Osvaldo
González, Mónica Cristina
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Organophosphorous pesticides
Degradation
Chloride anion
Flash-photolysis
Chlorinated byproducts
topic Ciencias Exactas
Química
Organophosphorous pesticides
Degradation
Chloride anion
Flash-photolysis
Chlorinated byproducts
dc.description.none.fl_txt_mv The reaction of phosphor-containing pesticides such as methidathion (MT) and dimethoate (DM) with dichloride radical anions (Cl₂˙⁻) was investigated. The second order rate constants (1.3 ± 0.4) × 10⁸ and (1.1 ± 0.4) × 10⁸ M⁻¹ s⁻¹ were determined for the reaction of Cl₂˙⁻ with MT and DM, respectively. A reaction mechanism involving an initial charge transfer from the sulfide groups of the insecticides to Cl₂˙⁻ is proposed and supported by the identified transient intermediates and reaction products. The formation of chlorinated byproducts was determined. The unexpected consequences of an efficient Cl₂˙⁻ reactivity towards MT and DM on the degradation capacity by Advanced Oxidation Procedures applied to polluted waters containing the insecticides and Cl⁻ anions is discussed.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The reaction of phosphor-containing pesticides such as methidathion (MT) and dimethoate (DM) with dichloride radical anions (Cl₂˙⁻) was investigated. The second order rate constants (1.3 ± 0.4) × 10⁸ and (1.1 ± 0.4) × 10⁸ M⁻¹ s⁻¹ were determined for the reaction of Cl₂˙⁻ with MT and DM, respectively. A reaction mechanism involving an initial charge transfer from the sulfide groups of the insecticides to Cl₂˙⁻ is proposed and supported by the identified transient intermediates and reaction products. The formation of chlorinated byproducts was determined. The unexpected consequences of an efficient Cl₂˙⁻ reactivity towards MT and DM on the degradation capacity by Advanced Oxidation Procedures applied to polluted waters containing the insecticides and Cl⁻ anions is discussed.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/128864
url http://sedici.unlp.edu.ar/handle/10915/128864
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1879-2448
info:eu-repo/semantics/altIdentifier/issn/0043-1354
info:eu-repo/semantics/altIdentifier/pmid/23137829
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.watres.2012.10.018
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
351-362
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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