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Formulações de atrazina em xerogéis : síntese e caracterização

dc.contributor.authorÁvila, Letícia Gomes dept_BR
dc.contributor.authorLeite, Simone Benvenuttipt_BR
dc.contributor.authorDick, Deborah Pinheiropt_BR
dc.contributor.authorPohlmann, Adriana Raffinpt_BR
dc.date.accessioned2013-07-02T01:43:19Zpt_BR
dc.date.issued2009pt_BR
dc.identifier.issn0100-4042pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/72878pt_BR
dc.description.abstractIn this study, controlled release formulations of Atrazine (ATZ) were synthesized by the sol-gel method and characterized by elemental, FTIR, SEM, BET and DSC analyses. The release kinetic of ATZ from the formulations in CaCl2 0.01 mol L-1 medium was monitored by UV/Vis spectroscopy. In all formulations, ATZ was physically dispersed on the Si-polymer, and the dispersion grade decreased with increasing amount of herbicide. The ATZ release kinetics was controlled mainly by dissolution, and the data could be fitted to the Korsmeyer - Pepper model. The ATZ as xerogel presents a lower affinity for soil than as granulated form.en
dc.format.mimetypeapplication/pdf
dc.language.isoporpt_BR
dc.relation.ispartofQuímica nova. São Paulo. Vol. 32, n. 7 (2009), p. 1727-1733pt_BR
dc.rightsOpen Accessen
dc.subjectAtrazinapt_BR
dc.subjectSol-gelen
dc.subjectSol-gelpt_BR
dc.subjectSorptionen
dc.subjectHerbicida : Adsorçãopt_BR
dc.subjectSoilen
dc.titleFormulações de atrazina em xerogéis : síntese e caracterizaçãopt_BR
dc.title.alternativeAtrazine formulations in xerogels : synthesis and characterizationen
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000720413pt_BR
dc.type.originNacionalpt_BR


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