Stir Bar Sorptive Extraction Sbse
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. SBSE(EG-Silicone)-UFLC-MS/MS and HPLC-Flu Analysis of Norharman in Passiflora edulis Rinds
Previous studies on Passiflora edulis (sour passion fruit) rinds reported some biological activities and there is a growing interest on rinds flour as a possible functional food, but its alkaloid composition was not detailed investigated. This work reports on for the first time in the literature the identification of norharman in P. edulis rinds, by using st
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. Aroma characteristics and volatile compounds of distilled Crystal grape spirits of different alcohol concentrations: wine sprits in the Shangri-La region of China
Abstract Aroma composition is critical to the quality of distilled spirits while the alcohol concentration could have a great effect on the variety and content of aromatic substances. In order to clarify the effect of alcohol concentration on the formation of the aroma composition, volatile compounds in Crystal distilled grape spirits with different alcohol
Food Sci. Technol. Publicado em: 30/07/2018
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3. Aromatic profiles of young wines from berries at different heights on grapevines
Abstract The differences among young wines from berries at 3 heights (fruit-zone 1 (FZ1): 140-200 cm above the ground; FZ2: 80-140 cm; FZ3: 20-80 cm) on Vitis vinifera L.cv Merlot and Chardonnay were assessed to evaluate the influence of berry-heights on the final wine quality. Stir bar sorptive extraction coupled with gas chromatography–mass spectrometry
Food Sci. Technol. Publicado em: 30/06/2016
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4. Screening of By-Products of Esfenvalerate in Aqueous Medium Using SBSE Probe Desorption GC-IT-MS Technique
The pyrethroids, their metabolites and by-products have been recognized as toxic to environment and human health. Despite several studies about esfenvalerate toxicity and its detection in water and sediments, information about its degradation products is still scanty. In this work, esfenvalerate degradation products were obtained by chemical oxidation with h
J. Braz. Chem. Soc.. Publicado em: 2015-09
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5. Quantification of harman alkaloids in sour passion fruit pulp and seeds by a novel dual SBSE-LC/Flu (stir bar sorptive extraction-liquid chromatography with fluorescence detector) method
Este trabalho descreve um método para quantificação dos alcaloides harmana e harmina na polpa e nas sementes dos frutos de maracujá azedo (Passiflora edulis f. flavicarpa O. Degener, Passifloraceae), por extração dual por sorção com barra magnética e cromatografia líquida de alta eficiência com detecção por fluorescência (SBSE-LC/Flu dual). Os
J. Braz. Chem. Soc.. Publicado em: 2014-08
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6. Análise dos produtos de degradação do esfenvalerato por SBSE/CLAE-UV/DAD utilizando planejamento fatorial fracionário
A simple procedure based on stir bar sorptive extraction and high-performance liquid chromatography-ultraviolet/photodiode array detection (SBSE/LC-UV/PAD) to determine intermediates and by-products of esfenvalerate is described. The influence of organic modifier, ionic strength, extraction time, temperature and pH were simultaneously evaluated by using a fa
Quím. Nova. Publicado em: 2014-06
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7. Assessing stir bar sorptive extraction and microextraction by packed sorbent for determination of selective serotonin reuptake inhibitor antidepressants in plasma sample by non-aqueous capillary electrophoresis
Duas técnicas analíticas baseadas no equilíbrio de partição, extração sortiva em barra de agitação (SBSE) e microextração por sorvente empacotado (MEPS) foram avaliadas para a determinação de antidepressivos inibidores seletivos da recaptação de serotonina (SSRI): fluoxetina, sertralina, citalopram e paroxetina, em amostra de plasma por eletro
J. Braz. Chem. Soc.. Publicado em: 2013-10
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8. Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostra na determinação de fármacos no ambiente / Development and application of microextraction sample preparation techniques to determine pharmaceutical drugs in the environment
The occurrence of pharmaceutical drugs in the environment is a worldwide problem caused by the genotoxicity and ecotoxicity activities of those compounds. Water is one of most used natural resource in human activities which explain the presence of emerging contaminants. Those compounds affect not only humans but also aquatic animals that spend the whole life
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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9. Desenvolvimento de métodos cromatográficos para análises de antimicrobianos em amostras complexas / Development of chromatographic methods for analysis of antimicrobials in complex samples
This work describes the development of chromatographic methods in combination with microextraction techniques for the determination of parabens in cosmetic and human milk samples and of rifampicin in plasma samples. The design of a molecularly imprinted extraction phase for the solid-phase extraction (SPE) analysis of parabens in human milk samples is also r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2012
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10. Avaliação das técnicas de microextração e eletroforese capilar em meio não aquoso (NACE) para determinação de antidepressivos em amostras de plasma para fins de monitorização terapêutica / Evaluation of microextractions techniques and nonaqueous capillary electrophoresis (NACE) for the determination of antidepressants in plasma samples for therapeutic drug monitoring
A monitorização terapêutica tem sido descrita como um recurso clínico valioso, na individualização do regime de dosagem, de acordo com a concentração do fármaco em amostras de plasma ou soro. O objetivo da monitorização terapêutica é assegurar a eficácia clínica e minimizar os efeitos adversos dos fármacos prescritos na clínica. A química a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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11. Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas
The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits. The Solid Phase Extraction (SPE), Solid Phase Microextraction (SPME), Stir Bar Sorptive Extraction (SBSE) and Dispersive Liquid-
Química Nova. Publicado em: 2011-09
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12. Desenvolvimento das barras imunosorventes de agitação e avaliação das técnicas extração sortiva em barra de agitação, microextração em sorvente empacotado e cromatografia líquida para análise de antidepressivos em amostras de plasma / Development of immunosorbent stir bars and evaluation of stir bar sorptive extraction, microextraction by packed sorbent and liquid chromatography for the analysis of antidepressants in plasma samples
In this work, polyclonal and monoclonal anti-fluoxetine antibodies were developed in rabbits and mice by immunization with fluoxetine-bovine albumin conjugate, respectively. The developed antibodies were characterized on the basis of the specificity against the drug by ELISA (enzyme linked immunosorbent assay) and, subsequently they were purified by labmade
Publicado em: 2010