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Aplicação da matriz do doehlert na otimização das condições da GFAAS para determinação de cromo após extrato em ponto nuvem. Author(s): BEZERRA, M. de A.; LEMOS, S. G.; NOGUEIRA, A. R. de A.; FERREIRA, S. L. C. Repository: BDPA Publication year: 2005
Estratégia para o preparo de amostras de sangue bovino visando a determinação de ferro livre. Author(s): PELIZARO, C. B.; FRESCHI, G. P. G.; OLIVEIRA, M. C. de S.; NOGUEIRA, A. R. de A. Repository: BDPA Publication year: 2006
Selenium determination in tissue samples of Nile tilapia using ultrasound-assisted extraction. Author(s): SILVA, F. A.; PADILHA, C. C. F.; CASTRO, G. R. de; ROLDAN, P. dos S.; NOGUEIRA, A. R. de A.; MORAES, P. M.; PADILHA, P. M. This paper proposes a method to determine selenium in samples of fish muscle and liver tissue using ultrasound assisted extraction process, and analysed by graphite furnace atomic absorption spectrome... ... Repository: BDPA Publication year: 2011
Acid digestion for cadmium determination in mineral salt mixing for animal nutrition by thermospra y flame furnace Atomic absorption spectrometry. Author(s): GUERRA, M. B. B.; NOGUEIRA, A. R. de A.; SILVA, P. H. T.; PEREIRA FILHO, E. R. Cadmium was determined in a sample of mineral salt mixing to milk cattle that has been preparing to be a reference material. A volume of 3 mL of HNO3 3.0 mol L-1 plus 2.0 of H202 30% (W w-1) was added... ... Repository: BDPA Publication year: 2010
The effect of two kinds of eluents on the speciation of Al, Mn, and Fe by size-exclusion chromatography of some Brazilian soil solutions. Author(s): PEREZ, D. V.; CAMPOS, R. C. de Size-exclusion chromatography is a powerful tool for distinguishing dissolved organic matter in relation to its molecular size. However, problems may arise in the choice of the most appropriate eluent... ... Repository: BDPA Publication year: 2005

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