Search Results - "Ferreira, Sergio L C"

Lab-in-Syringe, a Useful Technique for the Analysis and Detection of Pollutants of Emerging Concern in Environmental and Food Samples by Cerdà, Víctor, Ferreira, Sergio L. C., Phansi, Piyawan

“…Lab-in-syringe is a new approach for the integration of various analytical extraction steps inside a syringe. Fully automated dispersive liquid–liquid…”
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Synthesis and Application of a New Polymer with Imprinted Ions for the Preconcentration of Uranium in Natural Water Samples and Determination by Digital Imaging by Felix, Caio S A, Chagas, Adriano V B, de Jesus, Rafael F, Barbosa, Willams T, Barbosa, Josiane D V, Ferreira, Sergio L C, Cerdà, Víctor

“…This work proposes the synthesis of a new polymer with imprinted ions (IIP) for the pre-concentration of uranium in natural waters using digital imaging as a…”
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Analytical strategies for determination of cadmium in Brazilian vinegar samples using ET AAS by Junior, Mario M.S., Silva, Laiana O.B., Leão, Danilo J., Ferreira, Sergio L.C.

“…•We propose two methods for the determination of cadmium in vinegar.•A direct method was proposed using external calibration for determination of cadmium.•The…”
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The chemical generation of NO for the determination of nitrite by high-resolution continuum source molecular absorption spectrometry by Brandao, Geovani C., Lima, Daniel C., Ferreira, Sergio L.C.

“…In the present work, we propose a method for the determination of nitrite based on the chemical generation of nitric oxide (NO) and its detection by…”
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Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design by Macedo, Samuel M., de Jesus, Raildo M., Garcia, Karina S., Hatje, Vanessa, de S. Queiroz, Antonio F., Ferreira, Sergio L.C.

“…In the present paper, a procedure for the determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by slurry sampling (SS)…”
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Phytoremediation in mangrove sediments impacted by persistent total petroleum hydrocarbons (TPH’s) using Avicennia schaueriana by Moreira, Icaro T.A., Oliveira, Olivia M.C., Triguis, Jorge A., Queiroz, Antonio F.S., Ferreira, Sergio L.C., Martins, Cintia M.S., Silva, Ana C.M., Falcão, Brunno A.

“…► We model applied with Avicennia schaueriana was efficient in the degradation of TPH’s in sediments. ► Association of plants with the community of…”
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Selenite biotransformation during brewing. Evaluation by HPLC–ICP-MS by Sánchez-Martínez, Maria, da Silva, Erik Galvão P., Pérez-Corona, Teresa, Cámara, Carmen, Ferreira, Sergio L.C., Madrid, Yolanda

“…► Biotransformation of selenium, added as selenite, during brewing has been studied. ► An analytical methodology based on different sample treatment methods…”
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Use of slurry sampling for the direct determination of zinc in yogurt by high resolution-continuum source flame atomic absorption spectrometry by Brandao, Geovani C., de Jesus, Raildo M., da Silva, Erik G.P., Ferreira, Sergio L.C.

“…This paper presents an analytical procedure for the direct determination of zinc in yogurt employing sampling slurry and high resolution-continuum source flame…”
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Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry by da Silva, Douglas G., Portugal, Lindomar A., Serra, Antonio M., Ferreira, Sergio L.C., Cerdà, Victor

“…► It was proposed a method for determination of mercury by AFS using MSFIA. ► The method was applied in real samples. ► The method was completely validated. ►…”
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Fast sequential determination of antimony and lead in pewter alloys using high-resolution continuum source flame atomic absorption spectrometry by Dessuy, Morgana B., de Jesus, Robson M., Brandao, Geovani C., Ferreira, Sergio L.C., Vale, Maria Goreti R., Welz, Bernhard

“…A simple method has been developed to determine antimony and lead in pewter alloy cups produced in Brazil, using fast sequential determination by…”
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Simultaneous determination of cadmium, iron and tin in canned foods using high-resolution continuum source graphite furnace atomic absorption spectrometry by Leao, Danilo J., Junior, Mario M.S., Brandao, Geovani C., Ferreira, Sergio L.C.

“…A method was established to simultaneously determine cadmium, iron and tin in canned-food samples using high-resolution continuum source graphite furnace…”
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Development of a MSFIA system for sequential determination of antimony, arsenic and selenium using hydride generation atomic fluorescence spectrometry by de Santana, Fernanda A., Portugal, Lindomar A., Serra, Antonio M., Ferrer, Laura, Cerdà, Víctor, Ferreira, Sergio L.C.

“…This paper proposed a multisyringe flow injection analysis (MSFIA) system for antimony, arsenic and selenium determination in peanut samples by hydride…”
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Simple and Fast Two-Step Fully Automated Methodology for the Online Speciation of Inorganic Antimony Coupled to ICP-MS by Portugal, Lindomar A., Palacio, Edwin, Cerdà, Víctor, Santos-Neto, Joao H., Ferrer, Laura, Ferreira, Sergio L. C.

“…A very simple, fast and non-chromatographic methodology for inorganic antimony speciation based on Multisyringe Flow Injection Analysis (MSFIA) employing…”
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Uranium determination using atomic spectrometric techniques: An overview by Santos, Juracir S., Teixeira, Leonardo S.G., dos Santos, Walter N.L., Lemos, Valfredo A., Godoy, Jose M., Ferreira, Sérgio L.C.

“…This review focuses on the determination of uranium using spectroanalytical techniques that are aimed at total determination such as flame atomic absorption…”
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Determination of copper in airborne particulate matter using slurry sampling and chemical vapor generation atomic absorption spectrometry by Silva, Laiana O.B., Leao, Danilo J., dos Santos, Debora C., Matos, Geraldo D., de Andrade, Jailson B., Ferreira, Sergio L.C.

“…The present paper describes the development of a method for the determination of copper in airborne particulate matter using slurry sampling and chemical vapor…”
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Evaluation and Application of the Internal Standard Technique for the Direct Determination of Copper in Fruit Juices Employing Fast Sequential Flame Atomic Absorption Spectrometry by Ferreira, Sergio L. C., da Silva, Erik G. P., Portugal, Lindomar A., Matos, Geraldo D., de Santana, Fernanda A., Korn, Maria G. A., Costa, Antonio C. S.

“…The present paper describes the evaluation and application of internal standard for the determination of copper in fruit juices, employing Fast Sequential…”
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Development of method for the speciation of inorganic iron in wine samples by Ferreira, Sergio L.C., Ferreira, Hadla S., de Jesus, Robson M., Santos, Joao V.S., Brandao, Geovani C., Souza, Anderson S.

“…In this paper, we proposed a procedure for the determination of iron(II) and total iron in wine samples employing molecular absorption spectrophotometry. The…”
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Multivariate optimization techniques in food analysis – A review by Ferreira, Sergio L.C., Silva Junior, Mario M., Felix, Caio S.A., da Silva, Daniel L.F., Santos, Adilson S., Santos Neto, João H., de Souza, Cheilane T., Cruz Junior, Raineldes A., Souza, Anderson S.

“…•Chemometric techniques employed for optimization in food analysis are shown.•Description, advantages, and drawbacks of the experimental designs are…”
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Speciation analysis based on digital image colorimetry: Iron (II/III) in white wine by Santos Neto, Joao H., Porto, Icaro S.A., Schneider, Mateus P., dos Santos, Ana M.P., Gomes, Adriano A., Ferreira, Sergio L.C.

“…This work proposes an analytical strategy utilizing digital images (DI) for the iron inorganic speciation in white wine. The method was established by the…”
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Multi-commutated flow system for inorganic selenium speciation in infusion tea samples by chemical vapor generation atomic fluorescence spectrometry by Portugal, Lindomar A., Palacio, Edwin, Frizzarin, Rejane, Santos Neto, Joao H., Cerda, Victor, Ferreira, Sergio L.C.

“…This work proposes an automated strategy for the inorganic selenium speciation in infusion tea samples, employing an MSFIA-CVG-AFS system and sodium…”
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