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dc.contributor.author
Babay, Paola Alejandra
dc.contributor.author
Gettar, Raquel T.
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Silva, María Fernanda
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Thiele, Björn
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Batistoni, Daniel Alberto
dc.date.available
2021-11-30T02:33:48Z
dc.date.issued
2006-05
dc.identifier.citation
Babay, Paola Alejandra; Gettar, Raquel T.; Silva, María Fernanda; Thiele, Björn; Batistoni, Daniel Alberto; Separation of nonylphenol ethoxylates and nonylphenol by non-aqueous capillary electrophoresis; Elsevier Science; Journal of Chromatography - A; 1116; 1-2; 5-2006; 277-285
dc.identifier.issn
0021-9673
dc.identifier.uri
http://hdl.handle.net/11336/147640
dc.description.abstract
Capillary electrophoresis based on non-aqueous solvent background electrolytes was employed, with single and multiple wavelength UV detection, to evaluate discrimination among oligomer components of mixtures of non-ionic, long chain nonylphenol ethoxylates (NPnEO, with n = number of ethoxy units) and their lipophilic degradation products. The tested organic solvents included acetonitrile, methanol, ethanol, 1- and 2-propanol, 1-butanol and tetrahydrofurane in the presence of sodium acetate. A rational variation of composition of background electrolyte solvent mixtures allowed to modify the mobility of electroosmotic flow and the type and degree of interactions between the ionic additive (sodium acetate) and the components of the analyte mixtures. The physicochemical properties of the solvents, such as dielectric constant, viscosity and electron donor–acceptor ability regarding the additive, were considered to improve the resolution of lipophilic compounds with less than three ethoxy groups and the discrimination attainable for longer chain oligomers. The studied methodologies also allowed discerning between surfactants of similar (nominal) ethoxy chain lengths. This was demonstrated by the different peak distribution patterns observed for NPnEO compounds with n = 7.5 and 10, respectively.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CATIONIC COMPLEXES
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HETEROCONJUGATION
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LIPOPHILIC METABOLITES
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NON-AQUEOUS CAPILLARY ELECTROPHORESIS
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NONYLPHENOL ETHOXYLATES
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Química Analítica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Separation of nonylphenol ethoxylates and nonylphenol by non-aqueous capillary electrophoresis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-08-04T19:43:17Z
dc.journal.volume
1116
dc.journal.number
1-2
dc.journal.pagination
277-285
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Babay, Paola Alejandra. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
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Fil: Gettar, Raquel T.. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
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Fil: Silva, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Departamento de Química. Área de Química Analítica; Argentina
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Fil: Thiele, Björn. Helmholtz Gemeinschaft. Forschungszentrum Jülich; Alemania
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Fil: Batistoni, Daniel Alberto. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
dc.journal.title
Journal of Chromatography - A
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.chroma.2006.03.004
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021967306005188
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