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Álvaro José dos Santos Neto
Researcher at University of São Paulo
Publications - 8
Citations - 220
Álvaro José dos Santos Neto is an academic researcher from University of São Paulo. The author has contributed to research in topics: Solid-phase microextraction & Matrix (chemical analysis). The author has an hindex of 6, co-authored 8 publications receiving 191 citations.
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Journal ArticleDOI
Solid-phase microextraction–liquid chromatography (SPME–LC) determination of fluoxetine and norfluoxetine in plasma using a heated liquid flow through interface
Christian Fernandes,Álvaro José dos Santos Neto,José Carlos Rodrigues,Claudete Alves,Fernando Mauro Lanças +4 more
TL;DR: The developed method has shown precision, linearity, specificity, and limit of quantification (LOQ) adequate to assay fluoxetine and norfluoxetines in plasma and has shown an improvement in the desorption process when compared with the results obtained using the off-line mode.
Journal ArticleDOI
Optimization of the SPME parameters and its online coupling with HPLC for the analysis of tricyclic antidepressants in plasma samples.
Claudete Alves,Christian Fernandes,Álvaro José dos Santos Neto,José Carlos Rodrigues,Maria Eugênia Costa Queiroz,Fernando Mauro Lanças +5 more
TL;DR: The proposed method, using a lab-made SPME-LC interface, allowed the determination of tricyclic antidepressants in in plasma at therapeutic concentration levels.
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Automated microcolumn-switching system for drug analysis by direct injection of human plasma
Álvaro José dos Santos Neto,José Carlos Rodrigues,Christian Fernandes,Guilherme Miola Titato,Claudete Alves,Fernando Mauro Lanças +5 more
TL;DR: The developed miniaturized system showed to be adequate and attractive, demonstrating a large potential for sample preparation, and the calibration curve shows r=0.998 with a linearity range from 20 to 500 ng ml(-1).
Journal ArticleDOI
Rapid HPLC‐DAD Determination of Furosemide in Tablets Using a Short Home‐Made Column
Felipe S. Semaan,Álvaro José dos Santos Neto,Fernando Mauro Lanças,Éder Tadeu Gomes Cavalheiro +3 more
TL;DR: In this paper, a fast chromatographic procedure to determine furosemide in tablets was described and the results were obtained in a C18 home-made column (50×4.6mm, 3µm) with methanol:phosphate buffer (10mmol l−1, pH 5.5) (30∶70) as the mobile phase, at a flow rate of 1.0mL min−1.
Journal ArticleDOI
Development of an improved heated interface for coupling solid-phase microextraction to high-performance liquid chromatography
José Carlos Rodrigues,Álvaro José dos Santos Neto,Christian Fernandes,Claudete Alves,Alex S. Contadori,Fernando Mauro Lanças +5 more
TL;DR: The obtained chromatograms showed an increasing of the area and height of chromatographic peaks and proved the excellent performance and reproducibility of the interface developed in this work.