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Journal of AOAC International|March 25, 2018
Ultrasound-Assisted Emulsification Microextraction in an Online System for Determination of Cadmium in Water and Tea SamplesLeane Santos Nunes, Valfredo Azevedo LemosEnvironmental Monitoring and Assessment|December 17, 2009
An online preconcentration system for the determination of uranium in water and effluent samplesValfredo Azevedo Lemos, Ednilton Moreira GamaTalanta|October 31, 2008
Amberlite XAD-2 functionalized with 2-aminothiophenol as a new sorbent for on-line preconcentration of cadmium and copperValfredo Azevedo Lemos, Patrícia Xavier BalizaFood Chemistry|December 4, 2013
A new method for preconcentration and determination of mercury in fish, shellfish and saliva by cold vapour atomic absorption spectrometryValfredo Azevedo Lemos, Liz Oliveira dos SantosEnvironmental Monitoring and Assessment|December 25, 2009
Determination of cadmium and lead in human biological samples by spectrometric techniques: a reviewValfredo Azevedo Lemos, Anaildes Lago de CarvalhoFood Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment|September 17, 2014
Method for the determination of cadmium, lead, nickel, cobalt and copper in seafood after dispersive liquid-liquid micro-extractionValfredo Azevedo Lemos, Emanuel Vitor dos Santos VieiraJournal of AOAC International|May 14, 2011
Determination of lead and manganese in biological samples and sediment using slurry sampling and flame atomic absorption spectrometryDaniel Rodrigues Vieira, Jacira Teixeira Castro, Valfredo Azevedo LemosJournal of Hazardous Materials|March 15, 2006
Preconcentration system for cadmium and lead determination in environmental samples using polyurethane foam/Me-BTANCEdnilton Moreira Gama, Adriana da Silva Lima, Valfredo Azevedo LemosEnvironmental Monitoring and Assessment|August 10, 2011
A preconcentration procedure for the determination of cadmium in biological material after on-line cloud point extractionPatrícia Xavier Baliza, Luiz Augusto Martins Cardoso, Valfredo Azevedo LemosTalanta|December 31, 2020
A novel direct-immersion single-drop microextraction combined with digital colorimetry applied to the determination of vanadium in waterLeane Santos Nunes, Maria Graças Andrade Korn, Valfredo Azevedo LemosPageof 3