Vanézia L Silva

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In this work the implementation of benzodiazepine ion-selective electrodes for pharmaceutical formulations control is described. The solid-contact electrodes for midazolam and diazepam are based on polymeric membranes incorporating respectively beta-cyclodextrin and (2-hydroxiproyl)-gamma-cyclodextrin as ionophores, 2-fluorophenyl 2-nitrophenyl ether as(More)
Sciences Chimiques de Rennes, UMR 6226 CNRS/Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France, LEAQ, Departamento de Engenharia Quimica, Universidade Federal de Pernambuco, CEP, Brazil, Departamento de Quı́mica Fundamental, CCEN, Universidade Federal de Pernambuco, CEP, 50740-540 Recife, PE, Brazil, and LACOM, Departamento de Quı́mica,(More)
The joint application of MS, infrared and (13)C NMR techniques for the determination of metal-DTPA structures (metal=Zn and Cd; DTPA=diethylenetriaminepentacetic acid) is reported. Mass spectrometry allowed determining the 1:1 stoichiometry of the complexes, while infrared analysis suggested that both nitrogen and carboxyl groups are sites for complexation.(More)
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