L
Leandro Machado de Carvalho
Researcher at Universidade Federal de Santa Maria
Publications - 165
Citations - 1934
Leandro Machado de Carvalho is an academic researcher from Universidade Federal de Santa Maria. The author has contributed to research in topics: Graphite furnace atomic absorption & Chemistry. The author has an hindex of 20, co-authored 158 publications receiving 1588 citations.
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Journal ArticleDOI
Indirect electrochemical sensing of radicals and radical scavengers in biological matrices.
Fritz Scholz,Gabriela López de Lara González,Leandro Machado de Carvalho,Maurício Hilgemann,Khenia Z. Brainina,Heike Kahlert,Robert Smail Jack,Dang Truong Minh +7 more
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Simultaneous Determination of Cadmium, Lead, Copper, and Thallium in Highly Saline Samples by Anodic Stripping Voltammetry (ASV) Using Mercury‐Film and Bismuth‐Film Electrodes
Leandro Machado de Carvalho,Paulo C. do Nascimento,Andrea Koschinsky,Michael Bau,Raquel Stefanello,Cristiane Spengler,Denise Bohrer,Cristiane Luisa Jost +7 more
TL;DR: In this article, a comparison of the performance of MFE and BiFE as working electrodes for the single-run ASV determinations of Cd(II, Pb(II), Tl(I), and Cu(II) in highly saline samples (seawater, hydrothermal fluids, and dialysis concentrates) by ASV using the mercury-film electrode (MFE) and the bismuth-film electrodes (BiFE) was presented.
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Sulfur speciation by capillary zone electrophoresis. Determination of dithionite and its decomposition products sulfite, sulfate and thiosulfate in commercial bleaching agents.
TL;DR: The procedure was applied for the determination of dithionite and its decomposition products sulfite, sulfate and thiosulfate in commercial formulations of bleaching agents and the results were found to be in good agreement with those of polarographic and spectrophotometric determinations.
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Liquid chromatographic determination of caffeine and adrenergic stimulants in food supplements sold in Brazilian e-commerce for weight loss and physical fitness
Carine Viana,Gabriela M. Zemolin,Larissa Sabo Müller,Thaís Ramos Dal Molin,Helena Seiffert,Leandro Machado de Carvalho +5 more
TL;DR: The study of caffeine, p-synephrine, hordenine, octopamine, tyramine, ephedrine and salicin as stimulants in dietary supplements marketed in Brazil for weight loss and physical fitness claims was described.
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Simultaneous determination of cobalt and nickel in vitamin B12 samples using high-resolution continuum source atomic absorption spectrometry.
Franciele Rovasi Adolfo,Paulo Cícero do Nascimento,Denise Bohrer,Leandro Machado de Carvalho,Carine Viana,Ananda Guarda,Alexsandro Nunes Colim,Patricia Mattiazzi +7 more
TL;DR: Nickel and cobalt were simultaneously assayed in vitamin B12 formulations by using atomic spectrometry based on a compromise between the proximity of specific Ni and Co spectral lines and the relative abundances of the analytes in the samples.