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Itens para a visualização no momento 41-50 of 60
Avaliação sistemática do efeito de matriz em ensaios bioanalíticos por LC-MS/MS para a análise de rifampicina em fluidos biológicos
(Universidade Federal de São Carlos, 2011-04-29)
Bioanalytical assays by LC-MS/MS were conducted in order to investigate the
matrix effect (ME) in the analysis of rifampicin (RIF) in biological matrices, human
plasma or microsomal fractions, which were submitted to ...
Determinação in situ de analitos de interesse alimentício empregando tratamento de imagens digitais de spot tests
(Universidade Federal de São Carlos, 2013-07-12)
In this work a simple, fast and inexpensive analytical method was developed to carry out in situ determinations of ethanol and sulfite ions in food samples. The method was based on digital images captured by cameras and / ...
Estudo e desenvolvimento de banhos contendo benzotriazol para eletrodeposição de níquel e caracterização química, física e morfologica dos filmes
(Universidade Federal de São Carlos, 2008-03-07)
In this work, nickel electrodeposition has been studied in the presence of the additives BTAH and/or EDTA onto platinum substrate from Watts plating bath, at different pH. The deposition and dissolution processes with or ...
Desenvolvimento de imunossensores piezelétrico e eletroquímico para detecção de amostras de interesse agronômico e de saúde
(Universidade Federal de São Carlos, 2012-07-23)
This work shows development of immunosensors for agronomic interest and public heath. The first was a piezoeletric immunosensor to detect a cysteine peptidase, a potencial biomarker for Xanthomonas citri subsp. citri that ...
Estratégias para a determinação de minoxidil
(Universidade Federal de São Carlos, 2009-09-04)
In this work methods for determining minoxidil (MX) in commercial samples and electrolytes of synthetic plasma and urine are presented. The minoxidil is a pharmaceutical whose blood vessel dilation property is used in the ...
Desenvolvimento de método analítico com emprego da espectrometria de absorção atômica para a determinação de Cd, Fe, Pb e Zn em amostras de interesse alimentício
(Universidade Federal de São Carlos, 2008-07-31)
Analytical chemistry plays a fundamental role in proposing fast and reliable procedures to analyze food samples. Proper selection and introduction of complementary foods reduces the vulnerability to micronutrient deficiencies. ...
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 ...
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 ...