Formulações de atrazina em xerogéis : síntese e caracterização

Detalhes bibliográficos
Autor(a) principal: Ávila, Letícia Gomes de
Data de Publicação: 2009
Outros Autores: Leite, Simone Benvenutti, Dick, Deborah Pinheiro, Pohlmann, Adriana Raffin
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/72878
Resumo: In 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.
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spelling Ávila, Letícia Gomes deLeite, Simone BenvenuttiDick, Deborah PinheiroPohlmann, Adriana Raffin2013-07-02T01:43:19Z20090100-4042http://hdl.handle.net/10183/72878000720413In 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.application/pdfporQuímica nova. São Paulo. Vol. 32, n. 7 (2009), p. 1727-1733AtrazinaSol-gelHerbicida : AdsorçãoSol-gelSorptionSoilFormulações de atrazina em xerogéis : síntese e caracterizaçãoAtrazine formulations in xerogels : synthesis and characterizationinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000720413.pdf000720413.pdfTexto completoapplication/pdf861996http://www.lume.ufrgs.br/bitstream/10183/72878/1/000720413.pdf34dbbe30372ab0e026d8acf053566117MD51TEXT000720413.pdf.txt000720413.pdf.txtExtracted Texttext/plain36876http://www.lume.ufrgs.br/bitstream/10183/72878/2/000720413.pdf.txtb534c37d655c1fa45bec46cf37892769MD52THUMBNAIL000720413.pdf.jpg000720413.pdf.jpgGenerated Thumbnailimage/jpeg1967http://www.lume.ufrgs.br/bitstream/10183/72878/3/000720413.pdf.jpg1285ee254be98bb16e08f7d1689eaa8fMD5310183/728782018-10-15 08:11:09.853oai:www.lume.ufrgs.br:10183/72878Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2018-10-15T11:11:09Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Formulações de atrazina em xerogéis : síntese e caracterização
dc.title.alternative.en.fl_str_mv Atrazine formulations in xerogels : synthesis and characterization
title Formulações de atrazina em xerogéis : síntese e caracterização
spellingShingle Formulações de atrazina em xerogéis : síntese e caracterização
Ávila, Letícia Gomes de
Atrazina
Sol-gel
Herbicida : Adsorção
Sol-gel
Sorption
Soil
title_short Formulações de atrazina em xerogéis : síntese e caracterização
title_full Formulações de atrazina em xerogéis : síntese e caracterização
title_fullStr Formulações de atrazina em xerogéis : síntese e caracterização
title_full_unstemmed Formulações de atrazina em xerogéis : síntese e caracterização
title_sort Formulações de atrazina em xerogéis : síntese e caracterização
author Ávila, Letícia Gomes de
author_facet Ávila, Letícia Gomes de
Leite, Simone Benvenutti
Dick, Deborah Pinheiro
Pohlmann, Adriana Raffin
author_role author
author2 Leite, Simone Benvenutti
Dick, Deborah Pinheiro
Pohlmann, Adriana Raffin
author2_role author
author
author
dc.contributor.author.fl_str_mv Ávila, Letícia Gomes de
Leite, Simone Benvenutti
Dick, Deborah Pinheiro
Pohlmann, Adriana Raffin
dc.subject.por.fl_str_mv Atrazina
Sol-gel
Herbicida : Adsorção
topic Atrazina
Sol-gel
Herbicida : Adsorção
Sol-gel
Sorption
Soil
dc.subject.eng.fl_str_mv Sol-gel
Sorption
Soil
description In 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.
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2013-07-02T01:43:19Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/72878
dc.identifier.issn.pt_BR.fl_str_mv 0100-4042
dc.identifier.nrb.pt_BR.fl_str_mv 000720413
identifier_str_mv 0100-4042
000720413
url http://hdl.handle.net/10183/72878
dc.language.iso.fl_str_mv por
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dc.relation.ispartof.pt_BR.fl_str_mv Química nova. São Paulo. Vol. 32, n. 7 (2009), p. 1727-1733
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reponame_str Repositório Institucional da UFRGS
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