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Desenvolvimento de métodos de pré-concentração para a determinação de elementos traço e especiação de cromo e arsênio em amostras agrícolas
(Universidade Federal de São Carlos, 2021-10-27)
Agricultural sustainable production is indispensable to meet the growing demand for food and nutritional control. The risk assessment associated with contamination by toxic elements in agricultural and aquaculture matrices ...
Estudo da interação entre borrachas comerciais e misturas de biodiesel/diesel por espectroscopia de ressonância magnética nuclear
(Universidade Federal de São Carlos, 2014-10-09)
Nowadays biodiesel has taken steps toward the consolidation as energetic matrices of many countries. Elastomers are one of the most important groups of materials used in engines and the compatibility of these materials ...
Síntese e caracterização de espinélios de lítio e manganês obtidos via rota hidrotermal assistida por microondas
(Universidade Federal de São Carlos, 2014-11-28)
Lithium and manganese oxide in spinel phase (LiMn2O4) was obtained by microwave-assisted hydrothermal route starting from completely soluble reagents. For this, a mixture of potassium permanganate and lithium hydroxide ...
Desenvolvimento de métodos analíticos empregando a espectrometria de absorção atômica sequencial rápida com atomização em chama
(Universidade Federal de São Carlos, 2012-06-01)
The aim of this PhD thesis was to develop analytical methods employing fast sequential flame atomic absorption spectrometry (FS-FAAS). In the first part of this study, a fast and simple method is proposed for the determination ...
Desenvolvimento de processos químicos seguindo os princípios adotados pela química verde: redução e conversão de CO2 usando compostos de Mn(I)
(Universidade Federal de São Carlos, 2014-10-09)
Due to its versatile chemistry and ability to stabilize metals with low oxidation states, carbonyl compounds of transition metals play an important role in various fields of organometallic chemistry. In our research group, ...
Investigação de processos colisionais e reacionais para cromo e vanádio em interface de espectrômetro de massa com plasma indutivamente acoplado
(Universidade Federal de São Carlos, 2013-03-14)
The analytical capability of inductively coupled plasma mass spectrometers (ICPMSs) and their wide use in different fields of science are well known. However some drawbacks, such as the occurrence of isobaric and polyatomic ...
Síntese e propriedades fotocatalíticas do titanato de bismuto obtido pela rota dos complexos oxidantes de peróxido
(Universidade Federal de São Carlos, 2014-08-14)
The welfare of the population and technological progress of our society largely depend on the development and the intensive use of synthetic materials, generating a large amount of residual chemicals and high energy ...
Espectrometria de Emissão Atômica em Filamento de Tungstênio (WCAES) : potencialidades e aplicações
(Universidade Federal de São Carlos, 2012-11-14)
This thesis describes the analytical application of WCAES for the determination of Ca, Al, Cs, Sr and Cr in samples with different compositions. In all studies the observation zone of the detector related to the coil was ...
Estudo de novas metodologias para realização de ensaios com a catepsina D na busca de inibidores
(Universidade Federal de São Carlos, 2015-02-06)
Cathepsin D is an aspartyl endopeptidase involved in many pathological processes when overexpressed. In addition, it is responsible for degradation of hemoglobin ingested by parasites of schistosomiasis. For these reasons ...
Obtenção e aplicação de fotoanodos baseados em TiO2 com adição de nitretos de carbono polimérico do tipo poli(heptazina imida)
(Universidade Federal de São Carlos, 2022-07-01)
In this work, poly(heptazine imide) carbon nitrides containing metals single atom in the ionic form were evaluated alone and in the combination with TiO2. Initially, a percentage of 2.5% of the nickel-containing material ...