J
Jorge S. Almeida
Researcher at Federal University of Bahia
Publications - 20
Citations - 281
Jorge S. Almeida is an academic researcher from Federal University of Bahia. The author has contributed to research in topics: Detection limit & Inductively coupled plasma. The author has an hindex of 8, co-authored 20 publications receiving 199 citations.
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Journal ArticleDOI
Ultrasound-assisted single-drop microextraction for the determination of cadmium in vegetable oils using high-resolution continuum source electrothermal atomic absorption spectrometry ☆
Jorge S. Almeida,Taiana A. Anunciação,Geovani C. Brandao,Alailson F. Dantas,Valfredo Azevedo Lemos,Leonardo S. G. Teixeira +5 more
TL;DR: In this paper, an ultrasound-assisted single-drop microextraction procedure for the determination of cadmium in vegetable oils using high-resolution continuum source electrothermal atomic absorption spectrometry was presented.
Journal ArticleDOI
Determination of Pb, Cu and Fe in ethanol fuel samples by high-resolution continuum source electrothermal atomic absorption spectrometry by exploring a combination of sequential and simultaneous strategies
TL;DR: In this paper, an analytical method was developed for the sequential and simultaneous determination of Pb, Cu and Fe in ethanol fuel samples using high-resolution continuum source electrothermal atomic absorption spectrometry (HR-CS ET AAS).
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Multivariate optimization of ultrasound-assisted extraction using Doehlert matrix for simultaneous determination of Fe and Ni in vegetable oils by high-resolution continuum source graphite furnace atomic absorption spectrometry
Jorge S. Almeida,Gabriel L. Santos,Geovani C. Brandao,Maria das Graças Andrade Korn,Leonardo S. G. Teixeira +4 more
TL;DR: A method for simultaneous determination of Fe and Ni in vegetable oil samples by high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS) after an acid extraction of the analytes is proposed.
Journal ArticleDOI
Ultrasound-assisted synthesis of ethyl esters from soybean oil via homogeneous catalysis
Jeane Q. A. Brito,Creuza S. Silva,Jorge S. Almeida,Maria das Graças Andrade Korn,Mauro Korn,Leonardo S. G. Teixeira +5 more
TL;DR: A transesterification reaction of esters from soybean oil with ethanol assisted by low-frequency ultrasound (20 kHz) was performed in the presence of a potassium hydroxide catalyst as discussed by the authors.
Journal ArticleDOI
Multi-element determination of Cd, Pb, Cu, V, Cr, and Mn in ethanol fuel samples using energy dispersive X-ray fluorescence spectrometry after magnetic solid phase microextraction using CoFe2O4 nanoparticles
Lucilia A. Meira,Jorge S. Almeida,Fabio de S. Dias,Pablo P. Pedra,Amalia L. Costa Pereira,Leonardo S. G. Teixeira +5 more
TL;DR: Innaphthol (PAN) was used in this article for multi-element determination in ethanol fuel samples using energy dispersive X-ray fluorescence spectrometry (EDXRF) combined with magnetic solid phase microextraction.