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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/128864
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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:UNLP2025-09-29T11:30:58Zoai: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:13292025-09-29 11:30:58.853SEDICI (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 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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