Buscar
Mostrando ítems 11-20 de 33
Desenvolvimento de modelos de calibração multivariada em espectroscopia de infravermelho próximo para ácidos graxos em amostras de carne bovina
(Universidade Federal de São Carlos, 2016-03-21)
The Brazilian cattle have shown promise prominence in the international market
compared to other commodities. It already knows the important role of fatty acids in the complimentarily of human nutrition. On the other hand, ...
Desafios na análise de benzofenonas em leite materno por injeção direta de amostras usando cromatografia líquida hifenada à espectrometria de massa
(Universidade Federal de São Carlos, 2018-08-30)
As a solution to the paradigm of achieving maximum efficiency in a shorter analysis time, Ultra High-performance Liquid Chromatography (UHPLC) coupled to mass spectrometry (MS / MS) have been successfully explored. The ...
Avaliação de polímeros impressos para pré- concentração/extração de Se, U e Cd
(Universidade Federal de São Carlos, 2015-06-18)
This thesis describes the development of imprinted polymers for preconcentration of Se, Cd and U. The relevant factors to the FIA system and preconcentration were optimized by Doehlert matrix. Chapter I describes an ...
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 ...
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 ...
Avaliação da geração de Hg(0) em reator anaeróbio de fluxo ascendente de ETE
(Universidade Federal de São Carlos, 2018-10-26)
Mercury is a metal of high mobility and toxicity in the environment. The understanding of different aspects about its biogeochemical cycle is of fundamental importance for the management of this global pollutant. Different ...
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 ...
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 ...
Aplicação de imagens digitais e técnicas espectroanalíticas combinadas com quimiometria para detecção e quantificação de adulteração em leite bovino
(Universidade Federal de São Carlos, 2013-02-22)
Milk provides essential nutrients (carbohydrate, fat, protein, minerals and vitamins) of great nutritional relevance for humans, particularly during childhood. Nowadays, the occurrence of milk adulteration is a major issue ...
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 ...