Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils

Detalhes bibliográficos
Autor(a) principal: Fontes,Mauricio Paulo Ferreira
Data de Publicação: 2006
Outros Autores: Alleoni,Luís Reynaldo Ferracciú
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600014
Resumo: Electrochemical properties of soils are very important for the understanding of the physico-chemical phenomena which affect soil fertility and the availability of nutrients for plants. This review highlights the electrochemical properties of tropical soils, the behavior and the availability of nutrients, toxic elements and heavy metals in the soil, especially for soils with predominant variable charge minerals. Availability of the elements is related to ionic exchange, solution speciation, and electrostatic and specific adsorptive soil properties. Empirical and surface complexation models are briefly described, and some results of their application in tropical soils are presented. A better understanding of the role of the double diffuse layer of charges and CEC on nutrient cation availability for highly weathered soils is required, as well as a solid comprehension of surface complexation models, in order to improve the knowledge regarding the behavior of anions in soils. More studies have to be conducted to generate results that enable the use of chemical speciation concepts and calculation of several constants used in surface complexation models, especially for highly weathered soils from the humid tropics. There has to be a continuing development and use of computer softwares that have already incorporated the concepts of chemical speciation and adsorption models in the study of nutrients, toxic elements and heavy metal availability in the soil-plant system.
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spelling Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soilselectric chargeadsorptionmodelionic exchangespeciationElectrochemical properties of soils are very important for the understanding of the physico-chemical phenomena which affect soil fertility and the availability of nutrients for plants. This review highlights the electrochemical properties of tropical soils, the behavior and the availability of nutrients, toxic elements and heavy metals in the soil, especially for soils with predominant variable charge minerals. Availability of the elements is related to ionic exchange, solution speciation, and electrostatic and specific adsorptive soil properties. Empirical and surface complexation models are briefly described, and some results of their application in tropical soils are presented. A better understanding of the role of the double diffuse layer of charges and CEC on nutrient cation availability for highly weathered soils is required, as well as a solid comprehension of surface complexation models, in order to improve the knowledge regarding the behavior of anions in soils. More studies have to be conducted to generate results that enable the use of chemical speciation concepts and calculation of several constants used in surface complexation models, especially for highly weathered soils from the humid tropics. There has to be a continuing development and use of computer softwares that have already incorporated the concepts of chemical speciation and adsorption models in the study of nutrients, toxic elements and heavy metal availability in the soil-plant system.Escola Superior de Agricultura "Luiz de Queiroz"2006-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600014Scientia Agricola v.63 n.6 2006reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162006000600014info:eu-repo/semantics/openAccessFontes,Mauricio Paulo FerreiraAlleoni,Luís Reynaldo Ferracciúeng2006-12-22T00:00:00Zoai:scielo:S0103-90162006000600014Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2006-12-22T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
title Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
spellingShingle Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
Fontes,Mauricio Paulo Ferreira
electric charge
adsorption
model
ionic exchange
speciation
title_short Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
title_full Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
title_fullStr Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
title_full_unstemmed Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
title_sort Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils
author Fontes,Mauricio Paulo Ferreira
author_facet Fontes,Mauricio Paulo Ferreira
Alleoni,Luís Reynaldo Ferracciú
author_role author
author2 Alleoni,Luís Reynaldo Ferracciú
author2_role author
dc.contributor.author.fl_str_mv Fontes,Mauricio Paulo Ferreira
Alleoni,Luís Reynaldo Ferracciú
dc.subject.por.fl_str_mv electric charge
adsorption
model
ionic exchange
speciation
topic electric charge
adsorption
model
ionic exchange
speciation
description Electrochemical properties of soils are very important for the understanding of the physico-chemical phenomena which affect soil fertility and the availability of nutrients for plants. This review highlights the electrochemical properties of tropical soils, the behavior and the availability of nutrients, toxic elements and heavy metals in the soil, especially for soils with predominant variable charge minerals. Availability of the elements is related to ionic exchange, solution speciation, and electrostatic and specific adsorptive soil properties. Empirical and surface complexation models are briefly described, and some results of their application in tropical soils are presented. A better understanding of the role of the double diffuse layer of charges and CEC on nutrient cation availability for highly weathered soils is required, as well as a solid comprehension of surface complexation models, in order to improve the knowledge regarding the behavior of anions in soils. More studies have to be conducted to generate results that enable the use of chemical speciation concepts and calculation of several constants used in surface complexation models, especially for highly weathered soils from the humid tropics. There has to be a continuing development and use of computer softwares that have already incorporated the concepts of chemical speciation and adsorption models in the study of nutrients, toxic elements and heavy metal availability in the soil-plant system.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162006000600014
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.63 n.6 2006
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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