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dc.contributor.author
Marco Brown, José Luis

dc.contributor.author
Undabeytia, Tomás
dc.contributor.author
Torres Sanchez, Rosa Maria

dc.contributor.author
Dos Santos Afonso, María

dc.date.available
2019-03-26T22:59:35Z
dc.date.issued
2017-04
dc.identifier.citation
Marco Brown, José Luis; Undabeytia, Tomás; Torres Sanchez, Rosa Maria; Dos Santos Afonso, María; Slow-release formulations of the herbicide picloram by using Fe-Al pillared montmorillonite; Springer Heidelberg; Environmental Science and Pollution Research; 24; 11; 4-2017; 10410-10420
dc.identifier.issn
0944-1344
dc.identifier.uri
http://hdl.handle.net/11336/72616
dc.description.abstract
Slow-release formulations of the herbicide picloram (PCM, 4-amino-3,5,6-trichloropyridine-2-carboxylic acid) were designed based on its adsorption on pillared clays (pillared clays (PILCs)) for reducing the water-polluting risk derived from its use in conventional formulations. Fe–Al PILCs were synthesized by the reaction of Na+-montmorillonite (SWy-2) with base-hydrolyzed solutions of Fe and Al. The Fe/(Fe + Al) ratios used were 0.15 and 0.50. The PCM adsorption isotherms on Fe–Al PILCs were well fitted to Langmuir and Freundlich models. The PCM adsorption capacity depended on the Fe content in the PILCs. Slow-release formulations were prepared by enhanced adsorption of the herbicide from PCM-cyclodextrin (CD) complexes in solution. CDs were able to enhance up to 2.5-fold the solubility of PCM by the formation of inclusion complexes where the ring moiety of the herbicide was partially trapped within the CD cavity. Competitive adsorption of anions such as sulfate, phosphate, and chloride as well as the FTIR analysis of PCM-PILC complexes provided evidence of formation of inner sphere complexes of PCM-CD on Fe–Al PILCs. Release of the herbicide in a sandy soil was lower from Fe–Al PILC formulations relative to a PCM commercial formulation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Heidelberg

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Adsorption
dc.subject
Fe&Ndash;Al Pillared Montmorillonite
dc.subject
Picloram
dc.subject
Slow-Release Formulations
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Otras Ciencias Químicas

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Ciencias Químicas

dc.subject.classification
CIENCIAS NATURALES Y EXACTAS

dc.title
Slow-release formulations of the herbicide picloram by using Fe-Al pillared montmorillonite
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-26T14:10:36Z
dc.identifier.eissn
1614-7499
dc.journal.volume
24
dc.journal.number
11
dc.journal.pagination
10410-10420
dc.journal.pais
Alemania

dc.description.fil
Fil: Marco Brown, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
dc.description.fil
Fil: Undabeytia, Tomás. Consejo Superior de Investigaciones Científicas. Instituto de Investigaciones Agrobiológicas de Galicia; España
dc.description.fil
Fil: Torres Sanchez, Rosa Maria. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; Argentina
dc.description.fil
Fil: Dos Santos Afonso, María. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
dc.journal.title
Environmental Science and Pollution Research

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11356-017-8699-9
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11356-017-8699-9
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