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Data do documentoTítuloAutor(es)Tipo
2007The influence of Cu, Fe, Ni, Pb and Zn on gum formation in the Brazilian automotive gasolineTeixeira, Leonardo Sena Gomes; Souza, Jurema de Castro; Santos, Hilda Costa dos; Pontes, Luiz Antônio Magalhães; Guimarães, Paulo R. B.; Vitor Sobrinho, Eledir; Vianna, Regina FerreiraArtigo de Periódico
1999Flow-injection solid-phase spectrophotometry for the determination of zinc in pharmaceutical preparationsTeixeira, Leonardo Sena Gomes; Rocha, Fábio Rodrigo Piovezani; Korn, Mauro; Reis, Boaventura F.; Ferreira, Sergio Luis Costa; Costa, Antonio Celso SpinolaArtigo de Periódico
Jan-2004Spectrophotometric determination of chromium in steel with 4-(2- thiazolylazo)-resorcinol (TAR) using microwave radiationCarvalho, Luciene Santos de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Teixeira, Leonardo Sena GomesArtigo de Periódico
2011Chemical composition determination of complex organicaqueous mixtures of alcohols, acetone, acetonitrile, hydrocarbons and water by nearinfrared spectroscopyRebouças, Márcio das Virgens; Brandão, Denise Sousa; Trindade, Alex; Pimentel, Maria Fernanda; Teixeira, Leonardo Sena GomesArtigo de Periódico
19982-(2-Thiazolylazo)-p-cresol as a spectrophotometric reagent for vanadium determination in the presence of ascorbic acidTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Queiroz, Adriana Santana; Amorim, Adelaide Maria Mendonça; Bomfim, Osvaldo N.; Ferreira, Sergio Luis CostaArtigo de Periódico
2008Development of a new sequential injection in-line cloud point extraction system for flame atomic absorption spectrometric determination of manganese in food samplesLemos, Valfredo Azevedo; Baliza, Patrícia Xavier; Carvalho, Anaildes Lago de; Oliveira, Rafael Vasconcelos; Teixeira, Leonardo Sena Gomes; Bezerra, Marcos de AlmeidaArtigo de Periódico
1998Spectrophotometric determination of vanadium(IV) in the presence of vanadium(V) using Br-PADAPCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Jaeger, Helena Valli; Ferreira, Sergio Luis CostaArtigo de Periódico
2013Evaluation of the oxidative stability of biodiesel blends from soybean, tallow and castor bean using experimental mixture designCarvalho, Anaildes Lago de; Santana, Sarah M. F.; Silva, Cristiane S.; Pepe, Iuri Muniz; Bezerra, Marcos de Almeida; Aragão, Leandro M.; Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida; Teixeira, Leonardo Sena GomesArtigo de Periódico
2002Determination of lead in seawater by inductively coupled plasma optical emission spectrometry after separation and pre-concentration with cocrystallized naphthalene alizariBispo, Márcia Sousa; Korn, Maria das Graças Andrade; Boa Morte, Elane Santos da; Teixeira, Leonardo Sena GomesArtigo de Periódico
1999Spectrophotometric Determination of Zinc Using 7-(4-Nitrophenylazo)-8-Hydroxyquinoline-5-Sulfonic AcidKorn, Maria das Graças Andrade; Ferreira, Adriana Costa; Teixeira, Leonardo Sena Gomes; Costa, Antonio Celso SpinolaArtigo de Periódico