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Data do documentoTítuloAutor(es)Tipo
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
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
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
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
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
1999Uso de irradiação de microondas na determinação espectrofotométrica de cromo com EDTACosta, Antonio Celso Spinola; Assis, Júlio César Rosa; Torres, André Luís Carvalho; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; 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
1995Spectrophotometric determination of tin in copper-based alloys using pyrocatechol violetCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Ferreira, Sergio Luis CostaArtigo 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