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Determinação sequencial rápida de As e Sb, Bi e Pb por espectrometria de absorção atômica com geração de hidretos
(Universidade Federal de São Carlos, 2012-03-22)
In this study it was developed two systems, one for the fast sequencial determination of As and Sb and other for Bi and Pb using flame atomic absorption spectrometry with hydride generation. To optimize the system for the ...
Uso de imagens digitais e ferramentas quimiométricas para identificação e determinação de Cr (VI) em solos contaminados
(Universidade Federal de São Carlos, 2012-03-23)
The determination of toxic metals in soils is an important factor to access their quality or identify possible contamination. The element Cr has double feature: Cr (III) is essential for human beings and Cr (VI) is toxic. ...
Determinação de molibdênio em plantas combinando microextração e espectrometria de absorção atômica em chama
(Universidade Federal de São Carlos, 2012-08-16)
In this study, a procedure for the determination of low concentrations of molybdenum in plants by flame atomic absorption spectrometry (FAAS) was developed. The poor sensitivity of FAAS for determination of refractory ...
Determinação voltamétrica de fibratos em formulações farmacêuticas utilizando eletrodos de carbono vítreo modificados com nanotubos de carbono
(Universidade Federal de São Carlos, 2012-07-27)
In this work voltammetric methods were developed from gemfibrozil (GEM) and bezafibrate (BZF) determination in pharmaceutical formulations for using modified glassy carbon electrode with dihexadecyl hydrogen phosphate ...
Avaliação da qualidade de um córrego urbano com relação às espécies metálicas e hidrocarbonetos policíclicos aromáticos (HPA)
(Universidade Federal de São Carlos, 2012-02-16)
Frequent use of urban waters for public supply has been increased, due to reduction of water resources suitable for human consumption. These waters are exposed to point and non-point sources of pollution, such as, atmospheric ...
Metabolismo in vitro do albendazol em escala miligrama e purificação por cromatografia líquida de alta eficiência semipreparativa
(Universidade Federal de São Carlos, 2012-06-06)
This work presents the in vitro metabolism of albendazole (ABZ) conducted with microsomal fractions obtained from Wistar rats and performed in analytical and semipreparative scale. Subsequent separation and purification ...
Especiação redox de crômio em amostras de solos contaminados
(Universidade Federal de São Carlos, 2012-03-21)
Chromium and its compounds are employed in various industrial processes, and these activities are responsible for the disposal of significant amounts of materials containing this element in the environment. Due to the known ...
Influência da adição de nitrato de cálcio e de PhoslockTM no abatimento dos fluxos de nutrientes e metais na interface sedimento-coluna de água em um sistema lacustre eutrofizado
(Universidade Federal de São Carlos, 2012-02-16)
This research project evaluated the changes in the fluxes of nutrients
and metals at the sediment-water interface as a result of sediment treatment by the
additions of PhoslockTM and calcium nitrate solution. The experiments ...
Estudo da eletrodeposição da liga Fe-Mo a partir de soluções levemente alcalinas contendo NTA - Nitrilo Acetato de Sódio
(Universidade Federal de São Carlos, 2012-02-29)
Fe-Mo alloys were electrochemically deposited on to a Pt substrate, from an alkaline solution containing FeCl3, Na2MoO4, trisodium nitrilotriacetic (NTA), in which Fe3+ ions were ddissolved to form [Fe(OH)(NTA)]-, ...