M
Marcelo Firmino de Oliveira
Researcher at Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto
Publications - 100
Citations - 1431
Marcelo Firmino de Oliveira is an academic researcher from Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. The author has contributed to research in topics: Carbon paste electrode & Voltammetry. The author has an hindex of 19, co-authored 96 publications receiving 1133 citations. Previous affiliations of Marcelo Firmino de Oliveira include University of São Paulo & Empresa Brasileira de Pesquisa Agropecuária.
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Journal ArticleDOI
Simultaneous determination of zinc, copper, lead, and cadmium in fuel ethanol by anodic stripping voltammetry using a glassy carbon–mercury-film electrode
Marcelo Firmino de Oliveira,Adelir Aparecida Saczk,Leonardo Luiz Okumura,Andréa Pires Fernandes,Mercedes de Moraes,Nelson Ramos Stradiotto +5 more
TL;DR: A new, versatile, and simple method for quantitative analysis of zinc, copper, lead, and cadmium in fuel ethanol by anodic stripping voltammetry is described, compared with a traditional analytical technique, flame atomic absorption spectrometry (FAAS), for quantification of these metal species in commercial fuel ethanol samples.
Journal ArticleDOI
Establishing a soybean germplasm core collection
Marcelo Firmino de Oliveira,Randall L. Nelson,Isaias Olívio Geraldi,Cosme Damião Cruz,José Francisco Ferraz de Toledo +4 more
TL;DR: The soybean core collection was established using the multivariate proportional selection strategy, and the random core collection best represented the entire collection in statistical terms.
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Voltammetric determination of cocaine in confiscated samples using a cobalt hexacyanoferrate film-modified electrode
Érica Naomi Oiye,Natalia Biziak de Figueiredo,José Fernando de Andrade,Heloísa Maria Tristão,Marcelo Firmino de Oliveira +4 more
TL;DR: The analysis of confiscated samples by the proposed method indicated cocaine levels from 37% to 95% (m/m) and these results were validated by comparison to HPLC technique, being obtained good correlation between both methods.
Journal ArticleDOI
Electrochemical Sensors Containing Schiff Bases and their Transition Metal Complexes to Detect Analytes of Forensic, Pharmaceutical and Environmental Interest. A Review.
Érica Naomi Oiye,Maria Fernanda Muzetti Ribeiro,Juliana Midori Toia Katayama,Maraine Catarina Tadini,Marco Antonio Balbino,Izabel Cristina Eleotério,Juliana Magalhães,Alex Soares Castro,Ricardo Soares Mota Silva,José Wilmo da Cruz Júnior,Edward R. Dockal,Marcelo Firmino de Oliveira +11 more
TL;DR: It is shown that new highly specific materials can be synthesized based on Schiff bases and applied in the pharmaceutical industry, toxicological studies, electrocatalysis and biosensors, and the environmental area.
Journal ArticleDOI
Voltammetric analysis of cocaine using platinum and glassy carbon electrodes chemically modified with Uranyl Schiff base films
Laura Siqueira de Oliveira,Marco Antonio Balbino,Matheus Manoel Teles de Menezes,Edward R. Dockal,Marcelo Firmino de Oliveira +4 more
TL;DR: In this article, the same authors developed a set of platinum and glassy carbon electrodes chemically modified with films of Schiff bases of [UO 2 (3-MeOSalen)(H 2 O)] and H 2 O to determine cocaine.