Search Results - "Zagatto, E. A. G."

Molecularly imprinted polymer as a solid phase extractor in flow analysis by Dias, A.C.B., Figueiredo, E.C., Grassi, V., Zagatto, E.A.G., Arruda, M.A.Z.

“…Molecularly imprinted polymers (MIPs) are novel alternative materials for solid phase extraction. Applications in flow analysis are recent and enhanced in-line…”
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Zone trapping/merging zones in flow analysis: A novel approach for rapid assays involving relatively slow chemical reactions by Vida, Ana C.F., Sasaki, Milton K., Gomes, Taciana F., Silva, Claudineia R., Feres, Mário A., Zagatto, E.A.G.

“…A novel strategy for accomplishing zone trapping in flow analysis is proposed. The sample and the reagent solutions are simultaneously inserted into convergent…”
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Chemiluminometric determination of ascorbic acid in pharmaceutical formulations exploiting photo-activation of GSH-capped CdTe quantum dots by Sasaki, M. K., Ribeiro, D. S. M., Frigerio, C., Prior, J. A. V., Santos, J. L. M., Zagatto, E. A. G.

“…ABSTRACT An automated multi‐pumping flow system is proposed for the chemiluminometric determination of ascorbic acid in pharmaceutical formulations, relying on…”
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Prior assay as an approach to flow titrations. Spectrophotometric determination of iron in alloys and ores by Honorato, Ricardo Saldanha, Zagatto, Elias Ayres G, Lima, Ricardo Alexandre C, Araújo, Mário César U

“…In titrimetric procedures, the number of data points can be reduced when the analyte concentration is roughly known. This aspect is emphasised in automated…”
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Multicommutation in flow analysis. II: Binary sampling for spectrophotometric determination of nickel, iron and chromium in steel alloys by MARTELLI, P. B, REIS, B. F, KRONKA, E. A. M, BERGAMIN F, H, KORN, M, ZAGATTO, E. A. G, LIMA, J. L. F. C, ARAUJO, A. N

“…Multicommutation flow systems for the spectrophotometric determination of nickel, iron and chromium in acid solutions of steel alloys employing a binary…”
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Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003) by Riekkola, M.-L., Jönsson, J. Å., Smith, R. M.

“…This paper presents terms and definitions for capillary electromigration techniques for separation, qualitative and quantitative analysis and physico-chemical…”
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Mixing chambers in flow analysis: A review by Zagatto, E. A. G., Carneiro, J. M. T., Vicente, S., Fortes, P. R., Santos, J. L. M., Lima, J. L. F. C.

“…Inclusion of a mixing chamber in a flow system is critically rev—iewed in-relation to sample dilution, improvement of mixing conditions and exploitation of…”
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A flow-batch titrator exploiting a one-dimensional optimisation algorithm for end point search by Honorato, Ricardo S., Araújo, Mário César U., Lima, Ricardo A.C., Zagatto, Elias A.G., Lapa, Rui A.S., Costa Lima, José L.F.

“…A flow-batch hybrid system is proposed as a novel approach to automated titration. Sampling and signal processing are done as in usual flow systems, whereas…”
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Anionic surfactants in acid media: a new cloud point extraction approach for the determination of polycyclic aromatic hydrocarbons in environmental samples by Sicilia, D, Rubio, S, Pérez-Bendito, D, Maniasso, N, Zagatto, E.A.G

“…Anionic surfactants separate into two isotropic phases in an acid medium at room temperature and can be successfully used in the cloud point extraction…”
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Spectrophotometric flow-batch determination of aluminum in plant tissues exploiting a feedback mechanism by Honorato, Ricardo S., Carneiro, Josiane M.T., Zagatto, Elias A.G.

“…The feasibility of flow-batch systems to carry out procedures exploiting feedback mechanisms is discussed, and a flow-batch analyzer is proposed for…”
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High-sensitivity methods for sequential injection determination of the main constituents of alloys by Dias, Ana Cristi B, Carneiro, Josiane M.T, Grassi, Viviane, Zagatto, Elias A.G

“…A sequential injection system with spectrophotometric detection was proposed for the determination of copper, zinc and lead in brass. In view of the high…”
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Multi-task flow system for potentiometric analysis : its application to the determination of vitamin B6 in pharmaceuticals by FERNANDES, R. N, SALES, M. G. F, REIS, B. F, ZAGATTO, E. A. G, ARAUJO, A. N, MONTENEGRO, M. C. B. S. M

“…A flow set-up based on the sequential injection analysis concept was designed, aiming at increased automation and robustness of procedures related with…”
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Evolution of the commutation concept associated with the development of flow analysis by Zagatto, Elias A.G, Reis, Boaventura F, Oliveira, Cláudio C, Sartini, Raquel P, Arruda, Marco Aurélio Z

“…Evolution of the commutation concept has lead to the proposal and development of different generations of flow analyzers. Since the inception of the…”
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Flow-injection spectrophotometric catalytic determination of manganese in plants exploiting the aerial oxidation of diphenyl carbazone by Maniasso, Nelson, Zagatto, Elias A.G

“…The catalytic effect of Mn(II) on the aerial oxidation of diphenylcarbazone (DFC) becomes very pronounced in the presence of triethanolamine (TEA), whereas the…”
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An automatic titrator based on a multicommutated unsegmented flow system: Its application to acid–base titrations by Almeida, Cristina M.N.V., Lapa, Rui A.S., Lima, José L.F.C., Zagatto, Elias A.G., Araújo, M.C.U.

“…A continuous flow methodology to perform acid–base titrations is described. The titrations are carried out on a multicommutated flow system which simulates…”
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Sampling strategies in sequential injection analysis: Exploiting the monosegmented-flow approach by Vieira, Jonas A, Raimundo, Jr, Ivo M, Reis, Boaventura F, Zagatto, Elias A.G, Lima, José L.F.C

“…An evaluation of different sampling techniques employing sequential injection analysis (SIA) is described. The reaction between Fe(II) and 1,10-phenanthroline,…”
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A multicommutated flow system with on-line compensation of the Schlieren effect applied to the spectrophotometric determination of pindolol by Lapa, Rui A.S, Lima, José L.F.C, Reis, Boaventura F, Santos, João L.M, Zagatto, Elias A.G

“…A continuous flow methodology for the spectrophotometric determination of pindolol in pharmaceutical preparations following complexation with Fe(III) is…”
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Spectrophotometric determination of total nitrogen in plant materials using a flow-injection system with an AgCl (s) reactor by Carneiro, Josiane M.T, Sartini, Raquel P, Zagatto, Elias A.G

“…An improved flow-injection system with an AgCl (s) reactor is proposed for the spectrophotometric determination of total nitrogen in Kjeldahl digests of plant…”
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Development of a potentiometric procedure for determination of glycerol and 2,3-butanediol in wine by sequential injection analysis by Luca, Gilmara C, Reis, Boaventura F, Zagatto, Elias A.G, Montenegro, Maria Conceição B.S.M, Araújo, Alberto N, Lima, José Luis F.C

“…A sequential injection procedure with potentiometric detection for determination of glycerol and 2,3-butanediol in wine is described. The method was based on…”
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A polyvalent flow injection system for multielemental spectrophotometric analysis of plant materials by Silva, F.V, Nogueira, A.R.A, Souza, G.B, Zagatto, E.A.G

“…A polyvalent flow injection system consisting of a single manifold suitable to perform different determinations after only minor adaptations was conceived. Its…”
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