Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Joao H. Santos Neto"'
Autor:
Lindomar A. Portugal, Edwin Palacio, Víctor Cerdà, Joao H. Santos-Neto, Laura Ferrer, Sergio L. C. Ferreira
Publikováno v:
Chemosensors, Vol 10, Iss 4, p 139 (2022)
A very simple, fast and non-chromatographic methodology for inorganic antimony speciation based on Multisyringe Flow Injection Analysis (MSFIA) employing online hydride generation (HG) ICP-MS was developed. The fully automated analysis is performed i
Externí odkaz:
https://doaj.org/article/8ad1b3317ded4a1287cf543fcceb4dd6
Autor:
Lindomar A. Portugal, Edwin Palacio, Rejane Frizzarin, Joao H. Santos Neto, Victor Cerda, Sergio L.C. Ferreira
Publikováno v:
Talanta. 252
This work proposes an automated strategy for the inorganic selenium speciation in infusion tea samples, employing an MSFIA-CVG-AFS system and sodium tetrahydroborate for chemical vapor generation. The selenium total is determined after an online prer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d80e8012bdf1758126dcb48087434588
https://pubmed.ncbi.nlm.nih.gov/36067699
https://pubmed.ncbi.nlm.nih.gov/36067699
Autor:
Ana Maria Pinto dos Santos, Adriano de Araújo Gomes, Mateus P. Schneider, Sergio Luis Costa Ferreira, Icaro S.A. Porto, Joao H. Santos Neto
Publikováno v:
Talanta. 194:86-89
This work proposes an analytical strategy utilizing digital images (DI) for the iron inorganic speciation in white wine. The method was established by the reaction of iron(II) ions with 1,2 ortho-phenanthroline as a chromogenic reagent. Total iron wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5521364aa5655ccadeaba2fab76d5236
https://doi.org/10.1016/j.talanta.2018.09.102
https://doi.org/10.1016/j.talanta.2018.09.102
Autor:
Caio S.A. Felix, Sergio Luis Costa Ferreira, Daniel Levi França da Silva, Raineldes A. Cruz Junior, Joao H. Santos Neto, Cheilane T. de Souza, Adilson S. Santos, Mario M.S. Junior, Anderson Santos Souza
Publikováno v:
Food Chemistry. 273:3-8
This work presents a critical review of multivariate techniques employed for optimization of methods developed in food analysis. A comparison between the response surface methodologies has been performed, it evidencing advantages and drawbacks of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e644e2f659ec93782b11532f7d8ec5a1
https://doi.org/10.1016/j.foodchem.2017.11.114
https://doi.org/10.1016/j.foodchem.2017.11.114
Autor:
Sergio L.C. Ferreira, Victor Cerda, Lindomar A. Portugal, Lucas B. Gonçalves, Joao H. Santos Neto, Joao B. Pereira Junior, Edwin Palacio
Publikováno v:
TrAC Trends in Analytical Chemistry. 152:116617
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38d8d89766e427a88d4d0ed3c4870163
https://doi.org/10.1016/j.trac.2022.116617
https://doi.org/10.1016/j.trac.2022.116617
Autor:
Liz Oliveira dos Santos, Joao H. Santos Neto, Débora de Andrade Santana, Ravena Souza de Almeida Azevedo, Ana Maria Pinto dos Santos, Adriano de Araújo Gomes
Publikováno v:
Food Chemistry. 368:130842
This study proposes a preliminary assessment of the homogeneity and stability through digital image acquisition of a candidate for mechanically processed pumpkin seed meal reference material, exploring the concepts of homogeneity curve and the analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::444bbcd0f1c344616c0f3f47b9edde3a
https://doi.org/10.1016/j.foodchem.2021.130842
https://doi.org/10.1016/j.foodchem.2021.130842
Autor:
Liz Oliveira dos Santos, Joao H. Santos Neto, Icaro S.A. Porto, Sergio Luis Costa Ferreira, Adriano de Araújo Gomes
Publikováno v:
Microchemical Journal. 149:104031
This work proposes a procedure using digital image colorimetry for the determination of ascorbic acid in natural fruit juices. The method was established by measuring the color of the iron(II)-1,2 ortho-phenanthroline complex. The digital images obta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a77edb32ea7cefcbdca3c1c2ba46e250
https://doi.org/10.1016/j.microc.2019.104031
https://doi.org/10.1016/j.microc.2019.104031
Publikováno v:
Química Nova, Vol 39, Iss 4, Pp 442-449 (2016)
The aim of this research was to determine the concentrations of calcium, iron, manganese, zinc, potassium and sodium in the water and leaves of Aechmea blanchetiana (Baker) L.B species collected between the cities of Ilhéus and Itacaré, Bahia, Braz
Externí odkaz:
https://doaj.org/article/f02bc634cc254c248d2fa7fd06de28f7