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Data do documentoTítuloAutor(es)Tipo
2004Multivariate optimization and validation studies in on-line pre-concentration system for lead determination in drinking water and saline waste from oil refinerySantos, Walter L. dos; Santos, Carla M. M. dos; Costa, Jorge L. O.; Andrade, Heloysa Martins Carvalho; Ferreira, Sergio Luis CostaArtigo de Periódico
2004Reagent generation for chemical analysis assisted by ultrasonic irradiationKorn, Mauro; Borges, Sivanildo da Silva; Maia, Pedro R. M.; Lima, José Luis Fontes da Costa; Lapa, Rui A. S.Artigo de Periódico
2004Doehlert matrix: a chemometric tool for analytical chemistry—reviewFerreira, Sergio Luis Costa; Santos, Walter Nei Lopes dos; Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida; Barros Neto, Benício de; Bosque-Sendra, Juan ManuelArtigo de Periódico
2004Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetryCosta, Fábio Gomes; Simplício, Lílian M. T.; Rocha, Zênis N. da; Brandão, Soraia TeixeiraArtigo de Periódico
2004Preliminary evaluation of the cadmium concentration in seawater of the Salvador City, BrazilKorn, Maria das Graças Andrade; Ferreira, Adriana Costa; Costa, Antonio Celso SpinolaArtigo de Periódico
2004Doehlert matrix for optimisation of procedure for determination of nickel in saline oil-refinery effluents by use of flame atomic absorption spectrometry after preconcentration by cloud-point extractionBezerra, Marcos de Almeida; Conceição, André L. B.; Ferreira, Sergio Luis CostaArtigo de Periódico
2004Deleterious effect of ammonium extraction from soil assisted by ultrasoundCastro, Jacira Teixeira; Korn, MauroArtigo de Periódico
2004Steroids and flavonoids of Porcelia macrocarpaChaves, Mariana Helena; Roque, Nídia Franca; Ayres, Mariane Cruz CostaArtigo de Periódico
2004Trimetallic naphtha reforming catalysts. I. Properties of the metal function and influence of the order of addition of the metal precursors on Pt–Re–Sn/ -Al2O3–ClCarvalho, Luiz Souza; Pieck, C. L.; Varela, Maria do Carmo Rangel Santos; Fígoli, N. S.; Grau, J. M.; Reyes, P.; Parera, José MiguelArtigo de Periódico
2004Factorial design for multivariate optimization of an on-line preconcentration system for platinum determination by ultrasonic nebulization coupled to inductively coupled plasma optical emission spectrometryFerreira, Sergio Luis Costa; Cerutti, S.; Salonia, J. A.; Olsina, R. A.; Martinez, L. D.Artigo de Periódico