Výsledky vyhledávání - "Queila O. dos Santos"

Akademický článek

Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Autor: Queila O. dos Santos, Marcos A. Bezerra, Giovana de Fátima Lima, Kristiany M. Diniz, Mariana G. Segatelli, Talitha O. Germiniano, Vivian da Silva Santos, César R. T. Tarley

Publikováno v: Química Nova, Vol 37, Iss 1, Pp 63-68 (2014)

In this paper, we describe the synthesis of an ion imprinted polymer (IIP) by homogeneous polymerization and its use in solid-phase to extract and preconcentrate zinc ions. Under optimal conditions (pH 5.0, preconcentration flow rate of 12.0 mL min-1

Externí odkaz: https://doaj.org/article/14ef72a1d7a1418f877b439eba064aa5

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An online preconcentration system for speciation analysis of arsenic in seawater by hydride generation flame atomic absorption spectrometry

Autor: Valfredo Azevedo Lemos, Sergio Luis Costa Ferreira, Queila O. dos Santos, Jailson B. de Andrade, Mario M.S. Junior

Publikováno v: Microchemical Journal. 143:175-180

In this paper, an on-line preconcentration system has been proposed for speciation analysis of inorganic arsenic in seawater. It is based on the selective reaction of As(III) with ammonium pyrrolidine dithiocarbamate (APDC) followed by sorption of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40a4103d38f48b12bb5d4615784778cf
https://doi.org/10.1016/j.microc.2018.08.004

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Application of Simplex Optimization in the Development of an On-line Preconcentration System for the Determination of Cu in Human Hair Samples Using FAAS

Autor: Valfredo Azevedo Lemos, Aldenor G. Santos, Marcos A. Bezerra, Queila O. dos Santos, Cleber Galvão Novaes

Publikováno v: Current Analytical Chemistry. 12:573-579

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73dff7dfa14dfbf0e998e90628f59a35
https://doi.org/10.2174/1573411012666151026214614

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Simplex optimization: A tutorial approach and recent applications in analytical chemistry

Autor: Cleber Galvão Novaes, Marcos A. Bezerra, Valdinei Santos de Souza, Sergio Luis Costa Ferreira, Aldenor G. Santos, Queila O. dos Santos

Publikováno v: Microchemical Journal. 124:45-54

Simplex is an optimization technique that, in a general sense, does not require the use of complex mathematical and statistical tools and can be very useful in the development of analytical methods. In this work, a tutorial reviewing the basic concep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ffcb3a78ed3fcc5c216257c56aad9f7e
https://doi.org/10.1016/j.microc.2015.07.023

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Synthesis, characterization and application of ion imprinted poly(vinylimidazole) for zinc ion extraction/preconcentration with faas determination

Autor: Talitha Oliveira Germiniano, Vivian da Silva Santos, Marcos A. Bezerra, Giovana de Fátima Lima, Kristiany Moreira Diniz, Mariana Gava Segatelli, Queila O. dos Santos, César Ricardo Teixeira Tarley

Publikováno v: Química Nova v.37 n.1 2014
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 37, Iss 1, Pp 63-68 (2014)
Química Nova, Volume: 37, Issue: 1, Pages: 63-68, Published: 2014

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16e4a994086a9b8883264d4fd5d15568
https://doi.org/10.1590/s0100-40422014000100012

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Application of simplex optimization in the development of an automated online preconcentration system for manganese determination

Autor: Marcos A. Bezerra, Islania Moreno, Valfredo Azevedo Lemos, Leandro Gonçalves dos Santos, Cleber Galvão Novaes, Douglas Gonçalves da Silva, Queila O. dos Santos

Publikováno v: Journal of the Brazilian Chemical Society. 21:2340-2346

An automated procedure was developed to determine trace amounts of manganese from vegetal leaves and river waters using flame atomic absorption spectrometry (FAAS) after online preconcentration of this metal using an Amberlite XAD-4 minicolumn modifi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2caeb4567ae3fa912816d2c9a1baed80
https://doi.org/10.1590/s0103-50532010001200022

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Multivariate Optimization of a Simultaneous Cloud Point Extraction Procedure of Cd, Cu and Ni from Sediments Samples and Determination by ICP OES

Autor: Marcos A. Bezerra, Queila O. dos Santos, Cleber Galvão Novaes, Islania Moreno, Leandro Gonçalves dos Santos, Marcio J. Santos

Publikováno v: Journal of the Brazilian Chemical Society.

A simultaneous preconcentration method for cadmium, copper and nickel in samples of sediments and determination by inductively coupled plasma optical emission spectrometry was developed. The method is based on the extraction of the metals as complexe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbbb4b4d91d5afa8c641f68ec81ea982
https://doi.org/10.5935/0103-5053.20150325

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