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RI UFBA >
Browsing by Author Welz, Bernhard
Showing results 1 to 20 of 39
| Issue Date | Title | Author(s) | | 2005 | Application of multivariate technique in method development for the direct determination of copper in petroleum condensate using graphite furnace atomic absorption spectrometry | Santos, Walter Nei Lopes dos; Dias, Fábio de Souza; Fernandes, M. S.; Rebouças, Márcio das Virgens; Vale, Maria Goreti Rodrigues; Welz, Bernhard; Ferreira, Sergio Luis Costa |
| 2007 | Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry | Dias, Fábio de Souza; Santos, Walter Nei Lopes dos; Costa, Antonio Celso Spinola; Welz, Bernhard; Vale, Maria Goreti R.; Ferreira, Sergio Luis Costa |
| 2007 | Cloud point extraction for the determination of lead and cadmium in urine by graphite furnace atomic absorption spectrometry with multivariate optimization using Box–Behnken design | Maranhão, Tatiane de A.; Martendal, Edmar; Borges, Daniel L. G.; Carasek, Eduardo; Welz, Bernhard; Curtius, Adilson José |
| 2008 | Comparison of direct solid sampling and slurry sampling for the determination of cadmium in wheat flour by electrothermal atomic absorption spectrometry | Araujo, Rennan Geovanny Oliveira; Oleszczuk, Nédio; Rampazzo, Roger T.; Costa, Pedro A.; Silva, Márcia M.; Vale, Maria Goreti R.; Welz, Bernhard; Ferreira, Sergio Luis Costa |
| 2012 | Comparison of three different sample preparation procedures for the determination of traffic-related elements in airborne particulate matter collected on glass fiber filters | Castilho, Ivan N. B.; Welz, Bernhard; Andrade, Jailson Bittencourt de; Smichowski, Patricia; Shaltout, Abdallah A.; Colares, Lígia; Carasek, Eduardo |
| 2007 | Determination of aluminum in highly concentrated iron samples: Study of interferences using high-resolution continuum source atomic absorption spectrometry | Bohrer, Denise; Heitmann, Uwe; Huang, Mao dong; Becker-Ross, Helmut; Florek, Stefan; Welz, Bernhard; Bertagnolli, Denise |
| 2007 | Determination of As, Cd, Pb and Tl in coal by electrothermal vaporization inductively coupled plasma mass spectrometry using slurry sampling and external calibration against aqueous standards | Borges, Daniel L. G.; Welz, Bernhard; Curtius, Adilson José |
| 2011 | Determination of cadmium and lead in beverages after leaching from pewter cups using graphite furnace atomic absorption spectrometry | Borges, Aline Rocha; Vale, Maria Goreti R.; Welz, Bernhard; Silva, Márcia M.; Dessuy, Morgana B.; Martelli, Patrícia B. |
| 2010 | Determination of cadmium and lead in plastic material from waste electronic equipment using solid sampling graphite furnace atomic absorption spectrometry | Duarte, Alvaro T.; Dessuy, Morgana B.; Silva, Marcia M.; Vale, Maria Goreti R.; Welz, Bernhard |
| 2011 | Determination of fluorine in tea using highresolution molecular absorption spectrometry with electrothermal vaporization of the calcium monofluoride CaF | Morés, Silvane; Monteiro, Gustavo C.; Santos, Flaviane da Silva; Carasek, Eduardo; Welz, Bernhard |
| 2010 | Determination of heavy metals in activated charcoals and carbon black for Lyocell fiber production using direct solid sampling high-resolution continuum source graphite furnace atomic absorption and inductively coupled plasma optical emission spectrometry | Lepri, Fábio G.; Borges, Daniel L. G.; Araujo, Rennan Geovanny Oliveira; Welz, Bernhard; Wendler, Frank; Krieg, Marcus; Becker-Ross, Helmut |
| 2007 | Determination of lead in sediments and sewage sludge by on-line hydride-generation axial-view inductively-coupled plasma optical-emission spectrometry using slurry sampling | Santos, Eder José dos; Herrmann, Amanda Beatriz; Frescura, Vera Lúcia Azzolin; Welz, Bernhard; Curtius, Adilson José |
| May-2011 | Determination of mercury in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sampling | Araujo, 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, Helmut |
| 2007 | Determination of mercury in biological samples by cold vapor atomic absorption spectrometry following cloud point extraction with salt-induced phase separation | Dittert, Ingrid M.; Maranhão, Tatiane A.; Borges, Daniel L. G.; Vieira, Mariana A.; Welz, Bernhard; Curtius, Adilson José |
| 2013 | Determination of silver in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sampling | Araujo, Rennan Geovanny Oliveira; Vignola, Fabíola; Castilho, Ivan N. B.; Welz, Bernhard; Vale, Maria Goreti R.; Smichowski, Patricia; Ferreira, Sergio Luis Costa; Becker-Ross, Helmut |
| 2013 | Determination of silver in airborne particulate matter collected on glass fiber filters using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sampling | Araujo, Rennan Geovanny Oliveira; Vignola, Fabíola; Castilho, Ivan N. B.; Welz, Bernhard; Vale, Maria Goreti R.; Smichowski, Patricia; Ferreira, Sergio Luis Costa; Becker-Ross, Helmut |
| 2013 | Determination of sulfur in coal using direct solid sampling and high-resolution continuum source molecular absorption spectrometry of the CS molecule in a graphite furnace | Mior, Renata; Morés, Silvane; Welz, Bernhard; Carasek, Eduardo; Andrade, Jailson Bittencourt de |
| 2008 | Determination of volatile and non-volatile nickel and vanadium compounds in crude oil using electrothermal atomic absorption spectrometry after oil fractionation into saturates, aromatics, resins and asphaltenes | Vale, Maria Goreti R.; Silva, Márcia M.; Damin, Isabel Cristina Ferreira; Sanches Filho, Pedro J.; Welz, Bernhard |
| 2013 | Determinations of Sb and Mo in Cairo's dust using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis | Shaltout, Abdallah A.; Welz, Bernhard; Castilho, Ivan N. B. |
| May-2011 | Direct determination of arsenic in petroleum derivatives by graphite furnace atomic absorption spectrometry: A comparison between filter and platform atomizers | Becker, Emilene M.; Rampazzo, Roger T.; Dessuy, Morgana B.; Vale, Maria Goreti R.; Silva, Márcia M. da; Welz, Bernhard; Katskov, Dmitri A. |
Showing results 1 to 20 of 39
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