1. Universidade Federal da Bahia

Navegando por Autor Teixeira, Leonardo Sena Gomes

Ir para: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
ou entre com as primeiras letras:  
Mostrando resultados 31 a 49 de 49 < Anterior 
Data do documentoTítuloAutor(es)Tipo
Mar-2011Determination of copper, iron, lead and zinc in gasoline by sequential multi-element flame atomic absorption spectrometry after solid phase extractionSantos, Denilson S. S.; Korn, Maria das Graças Andrade; Guida, Mauro A. B.; Santos, Gabriel Luiz dos; Lemos, Valfredo Azevedo; Teixeira, Leonardo Sena GomesArtigo de Periódico
2007Use of cetyltrimethylammonium bromide as surfactant for the determination of copper and chromium in gasoline emulsions by electrothermal atomic absorption spectrometrySantos, Denilson S. S. dos; Teixeira, Alete Paixão; Barbosa, José Tiago Pereira; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Teixeira, Leonardo Sena GomesArtigo de Periódico
2011Optimization of the operating conditions using factorial designs for determination of uranium by inductively coupled plasma optical emission spectrometrySantos, Juracir S.; Teixeira, Leonardo Sena Gomes; Araujo, Rennan Geovanny Oliveira; Fernandes, Andréa Pires; Korn, Maria das Graças Andrade; Ferreira, Sergio Luis CostaArtigo de Periódico
2012Determination of copper, iron, nickel and zinc in ethanol fuel by energy dispersive X-ray fluorescence after pre-concentration on chromatography paperTeixeira, Leonardo Sena Gomes; Santos, Elenir Souza; Nunes, Luana SenaArtigo de Periódico
2001Solid phase spectrophotometry for the determination of cobalt in pharmaceutical preparationsTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Assis, Júlio César Rosa; Ferreira, Sergio Luis Costa; Korn, MauroArtigo de Periódico
2002Flow-injection solid phase partial least-squares spectrophotometric simultaneous determination of iron, nickel and zincTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Garrigues, Salvador; Guardia, Miguel de laArtigo de Periódico
2006Determinação espectrofotométrica simultânea de cobre e ferro em álcool etílico combustível com reagentes derivados da ferroínaTeixeira, Leonardo Sena Gomes; Brasileiro, João F.; Borges Junior, Mário Marques; Cordeiro, Paulo Wilson Louzado; Rocha, Sarah A. N.; Costa, Antonio Celso SpinolaArtigo de Periódico
1998ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridgesTeixeira, Leonardo Sena Gomes; Reis, José Oscar N.; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Andrade, Jailson Bittencourt deArtigo de Periódico
2004Determination of formaldehyde in Brazilian alcohol fuels by flow-injection solid phase spectrophotometryTeixeira, Leonardo Sena Gomes; Leão, Elsimar S.; Dantas, Alailson Falcão; Pinheiro, Heloísa Lúcia C.; Costa, Antonio Celso Spinola; Andrade, Jailson Bittencourt deArtigo de Periódico
2008Multivariate calibration in Fourier transform infrared spectrometry as a tool to detect adulterations in Brazilian gasolineTeixeira, Leonardo Sena Gomes; Oliveira, Fábio Santos de; Santos, Hilda Costa dos; Cordeiro, Paulo Wilson Louzado; Almeida, Selmo Q.Artigo de Periódico
1999Spectrophotometric Determination of Uranium Using 2-(2-Thiazolylazo)-p-Cresol (TAC) in the Presence of SurfactantsTeixeira, Leonardo Sena Gomes; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Freitas, Maria de Lourdes; Carvalho, Marcelo Souza deArtigo de Periódico
2009Indirect determination of chloride and sulfate ions in ethanol fuel by X-ray fluorescence after a precipitation procedureTeixeira, Leonardo Sena Gomes; Chaves, Thaise J.; Guimarães, Paulo R. B.; Pontes, Luiz Antônio Magalhães; Teixeira, Josanaide Sant'Ana RibeiroArtigo de Periódico
2010Characterization of beef tallow biodiesel and their mixtures with soybean biodiesel and mineral diesel fuelTeixeira, Leonardo Sena Gomes; Couto, Marcelo B.; Souza, Giancarlos da Silva; Andrade Filho, Miguel; Assis, Júlio César Rosa; Guimarães, Paulo R. B.; Pontes, Luiz Antônio Magalhães; Almeida, Selmo Q.; Teixeira, Josanaide Sant'Ana RibeiroArtigo de Periódico
2000Nickel and zinc determination by flow-injection solid-phase spectrophotometry exploiting different sorption ratesTeixeira, Leonardo Sena Gomes; Rocha, Fábio Rodrigo Piovezani; Korn, Mauro; Reis, Boaventura F.; Ferreira, Sergio Luis Costa; Costa, Antonio Celso SpinolaArtigo 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
2011Use of nitroanilines for spectrophotometric determination of ethinylestradiol in pharmaceutical formulationsTeixeira, Leonardo Sena Gomes; Teixeira, Maiana de Araujo; Bueno, Admar Jorge Machado; Brito, Cristiane F. de; Dantas, Alailson Falcão; Costa, Antonio Celso SpinolaArtigo 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
2009Comparison between conventional and ultrasonic preparation of beef tallow biodieselTeixeira, Leonardo Sena Gomes; Assis, Júlio César Rosa; Mendonça, Daniel Ribeiro de; Santos, Iran T. V.; Guimarães, Paulo R. B.; Pontes, Luiz Antônio Magalhães; Teixeira, Josanaide Sant'Ana RibeiroArtigo de Periódico
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
Mostrando resultados 31 a 49 de 49 < Anterior