Paraquat-loaded alginate/chitosan nanoparticles: Preparation, characterization and soil sorption studies

dc.creatorSilva, MD
dc.creatorCocenza, DS
dc.creatorGrillo, R
dc.creatorde Melo, NFS
dc.creatorTonello, PS
dc.creatorde Oliveira, LC
dc.creatorCassimiro, DL
dc.creatorRosa, AH
dc.creatorFraceto, LF
dc.date2011
dc.date42156
dc.date2014-07-30T14:30:42Z
dc.date2015-11-26T16:32:42Z
dc.date2014-07-30T14:30:42Z
dc.date2015-11-26T16:32:42Z
dc.date.accessioned2018-03-28T23:14:12Z
dc.date.available2018-03-28T23:14:12Z
dc.identifierJournal Of Hazardous Materials. Elsevier Science Bv, v. 190, n. 41699, n. 366, n. 374, 2011.
dc.identifier0304-3894
dc.identifierWOS:000292427800046
dc.identifier10.1016/j.jhazmat.2011.03.057
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59053
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59053
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1270599
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionAgrochemicals are amongst the contaminants most widely encountered in surface and subterranean hydrological systems. They comprise a variety of molecules, with properties that confer differing degrees of persistence and mobility in the environment, as well as different toxic, carcinogenic, mutagenic and teratogenic potentials, which can affect non-target organisms including man. In this work, alginate/chitosan nanoparticles were prepared as a carrier system for the herbicide paraquat. The preparation and physicochemical characterization of the nanoparticles was followed by evaluation of zeta potential, pH, size and polydispersion. The techniques employed included transmission electron microscopy, differential scanning calorimetry and Fourier transform infrared spectroscopy. The formulation presented a size distribution of 635 +/- 12 nm, polydispersion of 0.518, zeta potential of -22.8 +/- 2.3 mV and association efficiency of 74.2%. There were significant differences between the release profiles of free paraquat and the herbicide associated with the alginate/chitosan nanoparticles. Tests showed that soil sorption of paraquat, either free or associated with the nanoparticles. was dependent on the quantity of organic matter present. The results presented in this work show that association of paraquat with alginate/chitosan nanoparticles alters the release profile of the herbicide, as well as its interaction with the soil, indicating that this system could be an effective means of reducing negative impacts caused by paraquat. (C) 2011 Elsevier B.V. All rights reserved.
dc.description190
dc.description41699
dc.description366
dc.description374
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationJournal Of Hazardous Materials
dc.relationJ. Hazard. Mater.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectParaquat
dc.subjectNanoparticles
dc.subjectAlginate
dc.subjectChitosan
dc.subjectBeta-cyclodextrin
dc.subjectAlginate Nanoparticles
dc.subjectControlled-release
dc.subjectPhysicochemical Characterization
dc.subjectBiodegradable Nanospheres
dc.subjectDrug Incorporation
dc.subjectNanocapsules
dc.subjectAdsorption
dc.subjectHerbicide
dc.subjectLidocaine
dc.titleParaquat-loaded alginate/chitosan nanoparticles: Preparation, characterization and soil sorption studies
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución