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Data do documentoTítuloAutor(es)Tipo
2000Application of polyurethane foam loaded with BTAC in an on-line preconcentration system: cadmium determination by FAASLemos, Valfredo Azevedo; Santelli, Ricardo Erthal; Carvalho, Marcelo Souza de; Ferreira, Sergio Luis CostaArtigo de Periódico
2006A pre-concentration procedure using coprecipitation for determination of lead and iron in several samples using flame atomic absorption spectrometryFerreira, Sergio Luis Costa; Saracoglu, S.; Soylak, Mustafa; Peker, D. S. Kacar; Elci, L.; Santos, Walter Nei Lopes dos; Lemos, Valfredo AzevedoArtigo de Periódico
2009A procedure for determination of cobalt in water samples after dispersive liquid–liquid microextractionBaliza, Patrícia Xavier; Teixeira, Leonardo Sena Gomes; Lemos, Valfredo AzevedoArtigo de Periódico
Set-2002An on-line system for preconcentration and determination of lead in wine samples by FAASLemos, Valfredo Azevedo; Guardia, Miguel de la; 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
2011Multi-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparationFernandes, Andréa Pires; Nunes, Luana Sena; Barbosa, José Tiago Pereira; Lemos, Valfredo Azevedo; Santos, Walter Nei Lopes dos; Korn, Maria das Graças Andrade; Teixeira, Leonardo Sena GomesArtigo de Periódico