Browsing by Author "Jara Ulloa, Paola Andrea"
Now showing items 1-13 of 13
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Ramírez, Eduardo Alejandro; Zon, María Alicia; Jara Ulloa, Paola Andrea; Squella Serrano, Juan; Núñez Vergara, Luis; Fernández, Héctor (PERGAMON-ELSEVIER SCIENCE LTD, 2010-01-01)We study the thermodynamics and kinetics of the adsorption of a redox couple having quinone nature on glassy carbon electrodes. This couple is produced by the anodic oxidation of mycotoxin ochratoxin A in 10% acetonitrile ...
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Jara Ulloa, Paola Andrea; Cañete Rosales, Paulina; Núñez Vergara, Luis; Squella Serrano, Juan (2011)1-Methyl-4-nitro-2-brominemethylimidazole (4-NimMeBr), was electrochemically reduced on mercury, glassy carbon and multiwalled carbon nanotubes (MWCNT) modified electrodes. 4-NimMeBr was adsorbed on the MWCNT modified ...
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Morales Pérez, María Paulina (Universidad de Chile, 2012)Los nitrocompuestos aromáticos son compuestos de interés biológico, ampliamente utilizados como fármacos en el tratamiento de diversas enfermedades que van desde problemas arteriales (nitrendipino) hasta enfermedades ...
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Inclusion complexes of estrone and estradiol with beta-cyclodextrin: Voltammetric and HPLC studies Yáñez Soto, Claudia; Basualdo Legüe, Julio Manuel; Jara Ulloa, Paola Andrea; Squella Serrano, Juan (WILEY, 2007-07)The interaction of estrone and estradiol with beta-cyclodextrins (beta CD) was investigated by differential pulse voltammetry (DPV) and high-performance liquid chromatography (HPLC) in mixed media. The co-solvent influence ...
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Jara Ulloa, Paola Andrea; Núñez Vergara, Luis; Squella Serrano, Juan (Wiley-V CH Verlag GMBH, 2007-07)Tne reductive electrochemistry of 1-methyl-4-nitro-2-hydroxymethylimidazole, a 4-nitroimidazole derivative, was examined in the presence of surfactants anionic as sodium dodecyl sulfate (SDS), nonionic, Triton-X, Cationic, ...
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Jara Ulloa, Paola Andrea; Salgado Figueroa, Paola; Moscoso Cabello, Raúl Andrés; Squella Serrano, Juan (2013)A molecularly imprinted polypyrrole polymer-based film and its properties regarding the recognition of gallic acid were investigated. The polypyrrole film was prepared by including a template molecule during the ...
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Bollo Dragnic, Soledad; Jara Ulloa, Paola Andrea; Finger Caraccioli, Sebastián; Núñez Vergara, Luis; Squella Serrano, Juan (ELSEVIER SCIENCE SA, 2005-04-01)A scanning electrochemical microscope (SECM), in the tip generation substrate collection and feedback modes, was used in a method to characterize the electrode mechanism of the O-2/O-2*(-) couple in dimethylsulphoxide ...
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Salgado Figueroa, Paola; Jara Ulloa, Paola Andrea; Álvarez Lueje, Alejandro; Squella Serrano, Juan (2013)In this work, a new method to quantify nitrofurantoin in aqueous media using a flow injection system connected to commercially available screen-printed carbon nanofibers was developed. A pretreatment of the screen-printed ...
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Jara Ulloa, Paola Andrea (Universidad de ChileCyberDocs, 2009)
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Turchán Labbé, Mariella Jéssica; Jara Ulloa, Paola Andrea; Bollo Dragnic, Soledad; Núñez Vergara, Luis; Squella Serrano, Juan; Álvarez Lueje, Alejandro (ELSEVIER SCIENCE BV, 2007-10-31)A complete electrochemical study and a novel electroanalytical procedure for brombexine quantitation are described. Bromhexine in methanol/0.1 mol L-1 Britton-Robinson buffer solution (2.5/97.5) shows an anodic response ...
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Jara Ulloa, Paola Andrea; Salgado Figueroa, Paola; Yañez,; Núñez Vergara, Luis; Squella Serrano, Juan (2012)We report the adsorptive voltammetric determination of nifedipine on multiwalled carbon nanotubes (MWCNT)-modified glassy carbon electrode (GCE). Nifedipine was adsorbed on the MWCNT and then reduced using linear sweep and ...
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Bollo Dragnic, Soledad; Jara Ulloa, Paola Andrea; Zapata Torres, Gerald; Cutiño,; Sturm,; Núñez Vergara, Luis; Squella Serrano, Juan (Elsevier Ltd, 2010)The voltammetric reduction of 1-methyl- and 1-H- 4-nitroimidazole derivatives was studied in different protic and aprotic media to investigate the influence of the N-1 substitution in the mechanism of reduction, the ...
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Jara Ulloa, Paola Andrea; Bollo Dragnic, Soledad; Núñez Vergara, Luis; Squella Serrano, Juan (WILEY-V C H VERLAG GMBH, 2008-06)We report the electrochemical behavior of a 4-nitroimidazole derivative, 1-methyl-4-nitro-2-hydroxymethylimidazole (4-NImMeOH), on glassy carbon electrode (GCE) modified with multiwalled carbon nanotubes (MWCNT). As ...