pH dependence of Glyphosate adsorption on soil horizons

Pesticides bring many problems to the environment and to human health. The first rationale for their use is increased food production. Glyphosate N-(phosphonomethyl)glycine (PMG) is a non-selective, post emergent, and broad spectrum herbicide, very well known for its extensive application in agricul...

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Detalles Bibliográficos
Autores principales: Tévez, H.R., Afonso, M.S.
Formato: JOUR
Materias:
Adsorption isotherm
Glyphosate
Horizon
Profile
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14053322_v67_n3_p509_Tevez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14053322_v67_n3_p509_Tevez
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spelling todo:paper_14053322_v67_n3_p509_Tevez2023-10-03T16:13:06Z pH dependence of Glyphosate adsorption on soil horizons Tévez, H.R. Afonso, M.S. Adsorption isotherm Glyphosate Horizon Profile Pesticides bring many problems to the environment and to human health. The first rationale for their use is increased food production. Glyphosate N-(phosphonomethyl)glycine (PMG) is a non-selective, post emergent, and broad spectrum herbicide, very well known for its extensive application in agriculture worldwide. PMG adsorption experiments were carried out in three horizons of a Typic Haplustoll soil from the Province of Santiago del Estero, Argentina. Adsorption isotherms were fitted using Freundlich and Langmuir models. The affinity constants (KF and KL), the adsorption intensity (1/n) and the maximum surface coverage (Gmax) were obtained. The results show the dependence of the parameters KL and Gmax with pH and also with the different horizons and particle size. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14053322_v67_n3_p509_Tevez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adsorption isotherm
Glyphosate
Horizon
Profile
spellingShingle Adsorption isotherm
Glyphosate
Horizon
Profile
Tévez, H.R.
Afonso, M.S.
pH dependence of Glyphosate adsorption on soil horizons
topic_facet Adsorption isotherm
Glyphosate
Horizon
Profile
description Pesticides bring many problems to the environment and to human health. The first rationale for their use is increased food production. Glyphosate N-(phosphonomethyl)glycine (PMG) is a non-selective, post emergent, and broad spectrum herbicide, very well known for its extensive application in agriculture worldwide. PMG adsorption experiments were carried out in three horizons of a Typic Haplustoll soil from the Province of Santiago del Estero, Argentina. Adsorption isotherms were fitted using Freundlich and Langmuir models. The affinity constants (KF and KL), the adsorption intensity (1/n) and the maximum surface coverage (Gmax) were obtained. The results show the dependence of the parameters KL and Gmax with pH and also with the different horizons and particle size.
format JOUR
author Tévez, H.R.
Afonso, M.S.
author_facet Tévez, H.R.
Afonso, M.S.
author_sort Tévez, H.R.
title pH dependence of Glyphosate adsorption on soil horizons
title_short pH dependence of Glyphosate adsorption on soil horizons
title_full pH dependence of Glyphosate adsorption on soil horizons
title_fullStr pH dependence of Glyphosate adsorption on soil horizons
title_full_unstemmed pH dependence of Glyphosate adsorption on soil horizons
title_sort ph dependence of glyphosate adsorption on soil horizons
url http://hdl.handle.net/20.500.12110/paper_14053322_v67_n3_p509_Tevez
work_keys_str_mv AT tevezhr phdependenceofglyphosateadsorptiononsoilhorizons
AT afonsoms phdependenceofglyphosateadsorptiononsoilhorizons
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