Výsledky vyhledávání - "Caio S.A. Felix"

A green on-line digestion system using 70% hydrogen peroxide and UV radiation for the determination of chromium in beer employing ETAAS

Autor: Raineldes A. Cruz Junior, Jorge Mauricio David, Matheus B. de Melo, Caio S.A. Felix, Adriano V.B. Chagas, Sergio Luis Costa Ferreira, Daniel Levi França da Silva

Publikováno v: Microchemical Journal. 146:1204-1208

This work proposes an on-line digestion system employing 70% (w/w) hydrogen peroxide and UV radiation for producing hydroxyl radicals for the determination of chromium in beer samples by electrothermal atomization atomic absorption spectrometry (ETAA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27dd24a35345b1a077dae5b0d7847acc
https://doi.org/10.1016/j.microc.2019.02.029

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Multivariate optimization techniques in food analysis – A review

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

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A closed inline system for sample digestion using 70% hydrogen peroxide and UV radiation. Determination of lead in wine employing ETAAS

Autor: Valfredo Azevedo Lemos, Luciana A. Silva, Rosemário Cerqueira Souza, Adriano V.B. Chagas, Sergio Luis Costa Ferreira, Caio S.A. Felix, Raineldes A. Cruz Junior

Publikováno v: Talanta. 191:479-484

This paper proposes a closed inline system for decomposition of wine, aiming at the determination of lead using electrothermal atomization atomic absorption spectrometry (ETAAS). The system is built using a 0.8 mm diameter PTFE tube, which is wrapped

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73ae72978daaedab5fc708dfdf611c8b
https://doi.org/10.1016/j.talanta.2018.08.085

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Speciation analysis of antimony in environmental samples employing atomic fluorescence spectrometry – Review

Autor: Víctor Cerdà, Sergio Luis Costa Ferreira, Caio S.A. Felix, Mario M.S. Junior, Jeancarlo Pereira dos Anjos, Edwin Palacio

Publikováno v: TrAC Trends in Analytical Chemistry. 110:335-343

This work review shows a description of non-chromatographic and chromatographic procedures proposed for speciation analysis of antimony employing hydride generation (HG) coupled to atomic fluorescence spectrometry (AFS) in environmental matrices, inc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1d6f7d3a034bd4d5f6105991bf233d5
https://doi.org/10.1016/j.trac.2018.11.017

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Determination and human health risk assessment of mercury in fish samples

Autor: Caio S.A. Felix, João B. Pereira Junior, Jucelino B. da Silva Junior, Allan S. Cruz, Kelly G.F. Dantas, Sergio L.C. Ferreira

Publikováno v: Talanta. 247:123557

This work reports the determination of mercury in fish samples purchased at a public market in Belem City, Brazil. The mercury quantification was performed using the DMA method, which allows limits of detection and quantification of 0.004 and 0.012 n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::573fbe5465bf8b05adf15b12af9b9a79
https://doi.org/10.1016/j.talanta.2022.123557

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Multivariate optimization techniques in analytical chemistry - an overview

Autor: Erik Galvão Paranhos da Silva, Sergio Luis Costa Ferreira, Rafael Vasconcelos Oliveira, Caio S.A. Felix, Gilson B. Dourado, Valfredo Azevedo Lemos, Antônio Fernando de Souza Queiroz, Daniel Levi França da Silva, Vanessa Sales de Carvalho

Publikováno v: Microchemical Journal. 140:176-182

This review presents fundamentals and a critical evaluation of the multivariate optimization techniques employed by the analytical chemistry. Characteristics of the surface response methodologies (SRM) are shown and compared. Additionally, a bibliogr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90ab3ec78fc09b593ac6ee6895807480
https://doi.org/10.1016/j.microc.2018.04.002

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An on-line system using ion-imprinted polymer for preconcentration and determination of bismuth in seawater employing atomic fluorescence spectrometry

Autor: Heloysa Martins Carvalho Andrade, Caio S.A. Felix, Darllen G. da Silva, Mauricio M. Victor, Sergio Luis Costa Ferreira, Valéria B. Riatto

Publikováno v: Talanta. 184:87-92

This work proposes an on-line preconcentration system using ion-imprinted polymer (IIP) for determination of bismuth in seawater employing atomic fluorescence spectrometry (AFS). The polymer was synthesized using 2- (5-bromo-2-pyridylazo) -5-diethyla

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b72daa2ea17705dfd188ab16416ade4
https://doi.org/10.1016/j.talanta.2018.02.089

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Application of a Novel Ion-Imprinted Polymer to the Separation of Traces of CdII Ions in Natural Water: Optimization by Box-Behnken Design

Autor: Fábio Alan Carqueija Amorim, Erik Galvão Paranhos da Silva, Valfredo Azevedo Lemos, Cleber Galvão Novaes, Caio S.A. Felix, Heloysa Martins Carvalho Andrade, Jeferson Alves Barreto

Publikováno v: Journal of the Brazilian Chemical Society.

This study describes the preparation of a novel ion-imprinted polymer (IIP) to apply pre-concentration of cadmium ions in water samples of the Pontal Bay in Ilheus, Brazil. First, cadmium ion was complexed with 2-(2-thiazolylazo)-p-cresol (TAC). Subs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da47c8c6dd81810d5787b6b77257525a
https://doi.org/10.21577/0103-5053.20180224

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