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Bernhard Welz
Researcher at Universidade Federal de Santa Catarina
Publications - 201
Citations - 8364
Bernhard Welz is an academic researcher from Universidade Federal de Santa Catarina. The author has contributed to research in topics: Graphite furnace atomic absorption & Atomic absorption spectroscopy. The author has an hindex of 51, co-authored 201 publications receiving 8004 citations. Previous affiliations of Bernhard Welz include Federal University of Bahia & National Council for Scientific and Technological Development.
Papers
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Determination of chromium(III) and chromium(VI) in water using flow injection on-line preconcentration with selective adsorption on activated alumina and flame atomic absorption spectrometric detection
TL;DR: In this paper, a method for the species-selective determination of chromium (III) and chromium(VI) in water samples by flame atomic absorption spectrometry using online preconcentration on a microcolumn packed with activated alumina (acidic form) has been developed.
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Palladium nitrate–magnesium nitrate modifier for electrothermal atomic absorption spectrometry. Part 5. Performance for the determination of 21 elements
TL;DR: In this paper, the palladium nitrate-magnesium nitrate (Pd-Mg) mixed modifier was used for the determination of 21 elements, including bismuth, lead and tellurium.
Book
High-Resolution Continuum Source AAS: The Better Way to Do Atomic Absorption Spectrometry
TL;DR: In this article, the authors provide the first complete and comprehensive discussion of high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) and its application to the analysis of a variety of difficult matrices.
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Differential determination of chromium(VI) and total chromium in natural waters using flow injection on-line separation and preconcentration electrothermal atomic absorption spectrometry
TL;DR: Results obtained for sea-water and river water reference materials were all within the certified range for total Cr with a precision of better than 10% relative standard deviation in the range 100-200 ng l-1.
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Determination of vanadium in petroleum and petroleum products using atomic spectrometric techniques
Fábio Alan Carqueija Amorim,Bernhard Welz,Bernhard Welz,Antonio Celso Spinola Costa,Fábio G. Lepri,Maria Goreti R. Vale,Sergio Luis Costa Ferreira +6 more
TL;DR: This paper offers a critical review of analytical methods based on atomic spectrometric techniques, particularly flame atomic absorption spectrometry (FAAS), electrothermal atomic absorption spectral analysis (ET AAS), inductively coupled plasma optical emission spectrometer (ICP OES), inductors coupled plasma mass spectrometers (ICp-MS).