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Now showing items 71-80 of 89
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 ...
Desenvolvimento de procedimentos para análise inorgânica de biodiesel usando técnicas espectroanalíticas
(Universidade Federal de São Carlos, 2010-08-25)
In this work, analytical procedures are proposed for the determination of major and trace elements in biodiesel samples employing flame atomic absorption spectrometry (F AAS), inductively coupled plasma optical emission ...
Construção e aplicação analítica de espectrômetro de emissão atômica com atomização eletrotérmica em filamento de tungstênio
(Universidade Federal de São Carlos, 2011-02-04)
This thesis has two lines of development based on measurements of atomic emission using a tungsten coil electrothermal atomizer. The first line dealt with the construction of a tungsten coil atomic emission spectrometer ...
Determinação e fracionamento de bário em castanha-do- Pará
(Universidade Federal de São Carlos, 2007-08-30)
In this work it was studied the determination and fractionation of barium in Brazil nuts employing several strategies for sample preparation and spectroanalytical techniques, i.e. graphite furnace atomic absorption ...
Análise química de materiais cerâmicos : digestão por fusão e medidas por ICP OES com configuração axial
(Universidade Federal de São Carlos, 2007-10-26)
Ceramic samples are efficiently digested using fusion procedures. However the elevated amounts of dissolved solids in the resulting solutions may cause spectral and transport
interferences, affect the analytical blanks ...
Preparo de amostras e análise elementar de produtos farmacêuticos
(Universidade Federal de São Carlos, 2016-08-17)
The medicine manufacture process may cause the final product contamination with
metallic residues to the detriment of human healthy. Aiming to regulate the
pharmaceutical production and establish standards of final ...
Estratégias para a determinação de minoxidil
(Universidade Federal de São Carlos, 2005-07-25)
Methods for the determination of minoxidil in commercial samples are presented. The minoxidil is a pharmaceutical whose dilation blood vessel property is used in the treatment of the Arterial Hypertension and in the treatment ...
Emprego de imagens hiperspectrais e espectrometria de emissão em plasma introduzido por laser na análise direta de amostras de lixo eletrônico
(Universidade Federal de São Carlos, 2015-02-27)
In this study, laser induced breakdown spectroscopy was combined with chemometric
tools to study the chemical composition of WEEE discarded. For this, three
samples of printed circuit board were chosen for analysis: PCBs ...
Especiação química de As e Cd por HPLC-ICP-MS em forrageira Brachiaria brizantha Stapf. cv. Marandu cultivada em solo previamente contaminado
(Universidade Federal de São Carlos, 2014-03-21)
Recent research and advances in analytical chemistry show that the total content determination of an element, although it is essential, is limited since it is not sufficient to provide information about the bioavailability ...
Estratégias espectroanalíticas para análise química inorgânica de plantas medicinais
(Universidade Federal de São Carlos, 2014-12-01)
This thesis describes the development of analytical procedures based on direct solid analysis by high-resolution continuum source atomic absorption spectrometry in graphite furnace (SS-HR-CS GF AAS) and aqueous solutions ...