Ts Ff Aas Thermospray Flame Furnace Atomic Absorption Spectrometry
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Performance of Avocado Seed Activated Carbon as Adsorbent for Highly Sensitive Determination of Cd Using a Flow Injection System Online Coupled to TS-FF-AAS
A flow-injection preconcentration system using detection by the thermospray flame furnace atomic absorption spectrometry (FIA-TS-FF-AAS) is proposed. Cd2+ are adsorbed on avocado seed activated carbon (ASAC) packed into a cylindrical mini-column and eluted using HCl solutions for the detection system. A 25–1 fractional factorial and Doehlert matrix design
J. Braz. Chem. Soc.. Publicado em: 2020-01
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2. Ampliação do uso da técnica de espectrometria de absorção atômica utilizando tubo metálico na chama para determinação de prata / Enlarging the use of thermospray flame furnace atomic absorption spectrometry for determination of silver
Thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) uses a metallic tube on the flame of the atomic absorption spectrometer. The sample is introduced in the tube by a ceramic capillary. In the development of this method, the parameters involved were studied and the optimal conditions consist of using air as carrier at 0.4 mL min, 200 mL of s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
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3. Direct determination of Cu, Mn, Pb, Zn in beer by thermospray flame furnace atomic absorption spectrometry.
In this work, thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) was employed for Cu, Mn, Pb, and Zn determination in beer without any sample digestion. The system was optimized and calibration was based on the analyte addition technique. A sample volume of 300 Al was introduced into the hot Ni tube at a flow-rate of 0.4 ml min 1 using 0.14
Spectrochimica Acta Part B v. 60. Publicado em: 2011
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4. Preconcentración y atomización con tubo en la llama para la determinación de Cadmio en agua de mar
A flow injection on-line pre-concentration system coupled to thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) for cadmium determination at sub μg L-1 levels in seawater samples was developed. The on-line system was evaluated by analysing cadmium containing in a synthetic seawater matrix (2.5% m/v NaCl, 0.5% m/v MgCl2 and 0.8% m/v CaCl2).
Química Nova. Publicado em: 2011
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5. Pré-concentração por extração em ponto nuvem para determinação de cádmio em amostras de bebidas por espectrometria de absorção atômica como forno tubular na chama e aerossol térmico / Preconcentration and Determination of Cadmium in Beverage Samples by Cloud Point Extraction and Thermospray Flame Furnace Atomic Absorption Spectrometry detection
In this work, it was evaluated extraction/preconcentration cloud point procedure for cadmium determination in soft drinks samples stored in polyethylene terephthalate (PET) packaging and detection by thermospray flame furnace atomic absorption spectrometry (TS -FF-AAS). For the cloud point preconcentration procedure were used Triton X-114 as surfactant, PAN
Publicado em: 2010
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6. Cadmium and lead cloud point preconcentration and determination in tobacco samples by thermospray flame furnace atomic absorption spectrometry
A espectrometria de absorção atômica com forno tubular na chama (TS-FF-AAS) foi empregada para a determinação de Cd e Pb em diferentes tipos de amostras brasileiras de tabacos após a pré-concentração no ponto nuvem (CP) otimizada por planejamento Doehlert. Para a separação das fases no procedimento por ponto nuvem, Triton® X-114 e 2-(bromo-2-piri
Journal of the Brazilian Chemical Society. Publicado em: 2009
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7. Desenvolvimento de metodologias para determinação de Cd e Pb em amostras de lodo de esgoto e sedimentos com o emprego da espectrometria de absorção atômica com forno tubular na chama e aerossol térmico / Method development for determination of cadmium and lead in sewage sludge and sediment using thermospray flame furnace atomic absorption spectrometry
In this work, Thermospray Flame Furnace Atomic Absorption Spectrometry (TS-FF-AAS) and Flame Atomic Absorption Spectrometry (FAAS) were employed in order to propose methods for determination of total and bioavailability concentration of Cd and Pb in environmental samples. The sediments were collected in the basin of the Jundiaí river and the sewage sludge (
Publicado em: 2008
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8. Aspectos analíticos em TS-FF-AAS : estudo de interferências e aplicação para a determinação de metais em vinhos e sucos / Analytical aspects of ts-ff-aas: study of interferences and application for determinations of metals in wines and grape juices
In this work, it was evaluated the effects of interferences caused by major and minor constituents on Co, Cu and Mn atomized by flame atomic absorption spectrometry (FAAS) and by thermospray flame furnace atomic absorption spectrometry (TS-FFAAS). The main concomitants were chosen according to the typical concentrations found in foods and beverages. The liqu
Publicado em: 2007
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9. Avaliação do comportamento das elementos Ni, Rb e Se por espectrometria de absorção atômica com forno tubular na chama de aeressol térmico. / Evaluation of valuation of the behavior of Ni, Rb and Se by thermospray flame furnace atomic absorption spectrometry.
Neste trabalho, avaliou-se o comportamento dos elementos Ni, Rb e Se por espectrometria de absorção atômica com forno tubular na chama e aerossol térmico (TS-FF-AAS). A montagem do sistema TS-FF-AAS consistiu de um tubo atomizador de Ni posicionado sobre o queimador de ar / acetileno. Com o auxílio de uma bomba peristáltica e um capilar cerâmico aquec
Publicado em: 2006
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10. Avaliação de aspectos configuracionais e analiticos da tecnica TSFFAAS / Evaluation of configurational and analytical aspects of the TSFFAAS technique
Nesta Dissertação foi avaliado o mecanismo de formação do spray térmico na técnica TSFFAAS (Thermospray Flame Furnace Atomic Absorption Spectrometry) via filmagens com altas velocidades de aquisição, relacionando estes aspectos com os resultados analíticos obtidos para o elemento Cd. Para isso foram utilizadas uma câmera com arranjos CCD operando �
Publicado em: 2006
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11. Espectrofotometría de absorción atómica con tubo en la llama: aplicación en la determinación total de cadmio, plomo y zinc en aguas frescas, agua de mar y sedimentos marinos
Thermospray flame furnace Atomic Absorption Spectrometry (TS-FF-AAS) was used for the total determination of Cd, Pb and Zn in fresh water and seawater samples at µg L-1 levels, and in marine sediment samples at µg g-1 levels. Using a sample loop of 50 µL and a peristaltic pump the samples were transported into the metallic tube placed over an air/acetylen
Química Nova. Publicado em: 2004-12
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12. Materiais adsorventes para a pre-concentração de cadmio e chumbo em sistema de fluxo acoplado a espectrometro de absorção atomica
Esta tese descreve a utilização de dois adsorventes naturais (vermicomposto e ácido húmico) e de um sintético (fulerita) para a pré-concentração de Cd e Pb. Após otimização, os analitos foram pré-concentrados em colunas contendo 25 mg de cada adsorvente natural com posterior determinação por FAAS (Flame Atomic Absorption Spectrometry). Ambos os
Publicado em: 1983