Data/hora: 07/06/2024 08:25:55

Provedor de dados: | 52
País: | Brazil
Título: | Adsorption of glyphosate on clays and soils from Paraná State: effect of pH and competitive adsorption of phosphate
Autores: | Cruz,Lútecia Hiera da; Santana,Henrique de; Zaia,Cássia Thaïs Bussamra Vieira; Zaia,Dimas Augusto Morozin.
Data: | 2007-05-01
Ano: | 2007
Palavras-chave: | Glyphosate; Adsorption; Clays; Soils.
Resumo: | This work showed that the adsorption of glyphosate (GPS) depends on surface area for clays and amount of clays and CEC for soils. Organic matter (OM) had a secondary role in the adsorption of GPS on soils. The adsorption of GPS on soils from Londrina and Floraí counties and clays (montmorillonite, kaolinite) decreased when pH increased, however, for bentonite clay and soil from Tibagi county was kept constant. For the soils, the competitive adsorption between GPS and phosphate showed that displace of GPS by phosphate was related to the amount of clays, CEC and pH. GPS was not easily displaced by phosphate on the clays. The FT-IR spectra of the soils and clays showed that soil from Londrina resembled kaolinite. Thus, this could explain the results of adsorption of GPS and the competitive adsorption between GPS and phosphate.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300004
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132007000300004
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.50 n.3 2007
Fonte: | info:eu-repo/semantics/openAccess