Browsing by Author Welz, Bernhard

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Issue DateTitleAuthor(s)Type
2013Determination of silver in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid samplingAraujo, Rennan Geovanny Oliveira; Vignola, Fabíola; Castilho, Ivan N. B.; Welz, Bernhard; Vale, Maria Goreti R.; Smichowski, Patricia; Ferreira, Sergio Luis Costa; Becker-Ross, HelmutArtigo de Periódico
2008Comparison of direct solid sampling and slurry sampling for the determination of cadmium in wheat flour by electrothermal atomic absorption spectrometryAraujo, Rennan Geovanny Oliveira; Oleszczuk, Nédio; Rampazzo, Roger T.; Costa, Pedro A.; Silva, Márcia M.; Vale, Maria Goreti R.; Welz, Bernhard; Ferreira, Sergio Luis CostaArtigo de Periódico
May-2011Determination of mercury in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid samplingAraujo, Rennan Geovanny Oliveira; Vignola, Fabíola; Castilho, Ivan N. B.; Borges, Daniel L. G.; Welz, Bernhard; Vale, Maria Goreti R.; Smichowski, Patricia; Ferreira, Sergio Luis Costa; Becker-Ross, HelmutArtigo de Periódico
2013Determination of silver in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid samplingAraujo, Rennan Geovanny Oliveira; Vignola, Fabíola; Castilho, Ivan N. B.; Welz, Bernhard; Vale, Maria Goreti R.; Smichowski, Patricia; Ferreira, Sergio Luis Costa; Becker-Ross, HelmutArtigo de Periódico
2011Direct determination of arsenic in petroleum derivatives by graphite furnace atomic absorption spectrometry: A comparison between filter and platform atomizersBecker, Emilene M.; Rampazzo, Roger T.; Dessuy, Morgana B.; Vale, Maria Goreti R.; Silva, Márcia M. da; Welz, Bernhard; Katskov, Dmitri A.Artigo de Periódico
2007Determination of aluminum in highly concentrated iron samples: Study of interferences using high-resolution continuum source atomic absorption spectrometryBohrer, Denise; Heitmann, Uwe; Huang, Mao dong; Becker-Ross, Helmut; Florek, Stefan; Welz, Bernhard; Bertagnolli, DeniseArtigo de Periódico
Apr-2011Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry samplingBorges, Aline Rocha; Becker, Emilene M.; Lequeux, Céline; Vale, Maria Goreti R.; Ferreira, Sergio Luis Costa; Welz, BernhardArtigo de Periódico
2014Investigation of spectral interferences in the determination of lead in fertilizers and limestone samples using high-resolution continuum source graphite furnace atomic absorption spectrometryBorges, Aline Rocha; Becker, Emilene M.; François, Luciane L.; Jesus, Alexandre de; Valea, Maria Goreti R.; Welz, Bernhard; Dessuy, Morgana B.; Andrade, Jailson Bittencourt deArtigo de Periódico
2011Determination of cadmium and lead in beverages after leaching from pewter cups using graphite furnace atomic absorption spectrometryBorges, Aline Rocha; Vale, Maria Goreti R.; Welz, Bernhard; Silva, Márcia M.; Dessuy, Morgana B.; Martelli, Patrícia B.Artigo de Periódico
2007Determination of As, Cd, Pb and Tl in coal by electrothermal vaporization inductively coupled plasma mass spectrometry using slurry sampling and external calibration against aqueous standardsBorges, Daniel L. G.; Welz, Bernhard; Curtius, Adilson JoséArtigo de Periódico
2012Comparison of three different sample preparation procedures for the determination of traffic-related elements in airborne particulate matter collected on glass fiber filtersCastilho, Ivan N. B.; Welz, Bernhard; Andrade, Jailson Bittencourt de; Smichowski, Patricia; Shaltout, Abdallah A.; Colares, Lígia; Carasek, EduardoArtigo de Periódico
2007Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposesDamin, Isabel Cristina Ferreira; Silva, Márcia M.; Vale, Maria Goreti R.; Welz, BernhardArtigo de Periódico
2008Investigation of artifacts caused by deuterium background correction in the determination of phosphorus by electrothermal atomization using high-resolution continuum source atomic absorption spectrometryDessuy, Morgana B.; Vale, Maria Goreti R.; Lepri, Fábio G.; Borges, Daniel L. G.; Welz, Bernhard; Silva, Márcia M.; Heitmann, UweArtigo de Periódico
2008Method development for the determination of lead in wine using electrothermal atomic absorption spectrometry comparing platform and filter furnace atomizers and different chemical modifiersDessuy, Morgana B.; Vale, Maria Goreti R.; Souza, Anderson Santos; Ferreira, Sergio Luis Costa; Welz, Bernhard; Katskov, Dmitri A.Artigo de Periódico
2007Investigation of phosphorus atomization using high-resolution continuum source electrothermal atomic absorption spectrometryDessuy, Morgana B.; Vale, Maria Goreti R.; Lepri, Fábio G.; Welz, Bernhard; Heitmann, UweArtigo de Periódico
2007Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometryDias, Fábio de Souza; Santos, Walter Nei Lopes dos; Costa, Antonio Celso Spinola; Welz, Bernhard; Vale, Maria Goreti R.; Ferreira, Sergio Luis CostaArtigo de Periódico
2007Determination of mercury in biological samples by cold vapor atomic absorption spectrometry following cloud point extraction with salt-induced phase separationDittert, Ingrid M.; Maranhão, Tatiane A.; Borges, Daniel L. G.; Vieira, Mariana A.; Welz, Bernhard; Curtius, Adilson JoséArtigo de Periódico
2013Sequential determination of Cd and Cr in biomass samples and their ashes using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysisDuarte, Alvaro T.; Dessuy, Morgana B.; Vale, Maria Goreti R.; Welz, Bernhard; Andrade, Jailson Bittencourt deArtigo de Periódico
2010Determination of cadmium and lead in plastic material from waste electronic equipment using solid sampling graphite furnace atomic absorption spectrometryDuarte, Alvaro T.; Dessuy, Morgana B.; Silva, Marcia M.; Vale, Maria Goreti R.; Welz, BernhardArtigo de Periódico
2010Optimization of fluorine determination via the molecular absorption of gallium mono-fluoride in a graphite furnace using a high-resolution continuum source spectrometerGleisner, Heike; Welz, Bernhard; Einax, Jürgen W.Artigo de Periódico