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Uso de técnicas espectroanalíticas na avaliação de amostras de placas de circuito impresso de lixo eletrônico
(Universidade Federal de São Carlos, 2015-11-26)
The increase in the consumer electronics equipment, especially, the cell has aroused the academia and society in general interest. Such equipment when obsolete became part of the so-called junk mail. Among the components ...
Avaliação e correção de interferências na determinação de As e Se por técnicas com plasma acoplado indutivamente
(Universidade Federal de São Carlos, 2012-02-28)
The aim of the thesis was to evaluate different strategies for correcting spectral and non-spectral interferences on As and Se determination by inductively coupled plasma optical emission spectrometry (ICP OES) and mass ...
Desenvolvimento de biossensores utilizando nanotubos de carbono e nanopartículas de ouro
(Universidade Federal de São Carlos, 2012-06-22)
First, a glassy carbon electrode modified with functionalized carbon nanotubes (CNTs) and glucose oxidase was proposed. Cyclic voltammetry of GOx immobilized onto the surface of CNTs showed a pair of well-defined redox ...
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 ...
Desenvolvimento de genossensores utilizando microbalança de cristal de quartzo e técnicas eletroquímicas
(Universidade Federal de São Carlos, 2011-02-18)
The proliferation of toxic algae in different oceans leads to great economic losses and environmental damage the mortality of marine animals such as mollusks and fish due to neurotoxins that they release into the environment. ...
Estratégias quimiométricas para análise de plantas por espectrometria de emissão óptica com plasma induzido por laser
(Universidade Federal de São Carlos, 2010-12-08)
A simultaneous optimization strategy based on neuro-genetic approach is proposed for selection of operational parameters for the simultaneous determination of macronutrients (Ca, Mg and P), micronutrients (B, Cu, Fe, Mn ...
Desenvolvimento de procedimentos eletroanalíticos para a determinação de antioxidantes e corantes em produtos alimentícios empregando um eletrodo de diamante dopado com boro
(Universidade Federal de São Carlos, 2011-04-29)
The following topics were investigated in this thesis: a) the electrochemical response of a boron-doped diamond electrode, after different electrochemical pretreatments, for two antioxidants (butylated hydroxyanisole BHA ...
Recuperação de reservatórios eutrofizados por atividades antrópicas : estudos em microcosmos
(Universidade Federal de São Carlos, 2016-05-25)
The economic development of a country depends on good quality of water
available, so the conservation and restoration of water bodies are strategic
conditions for this to happen. However, water resources have become ...
Teores dos elementos químicos essenciais e tóxicos na rastreabilidade da carne bovina
(Universidade Federal de São Carlos, 2012-02-15)
The objective of this work was to develop methodologies for the determination of inorganic constituents in meat sample and the study of correlations between samples with chemical elements profile, especially Nelore samples ...
Avaliação da espectrometria de emissão óptica com plasma induzido por laser (LIBS) para a determinação de Ba, Cd, Cr e Pb em brinquedos
(Universidade Federal de São Carlos, 2010-11-17)
LIBS is a spectroanalytical technique that employs the microsampling by laser ablation and subsequent exitations for atoms, ions and molecular fragments presents in induced microplasm.This technique was evaluated for ...