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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 / ...
Avaliação de parâmetros e produção de materiais de referência de suplemento mineral para nutrientes e contaminantes inorgânicos
(Universidade Federal de São Carlos, 2011-09-09)
This paper was prepared a material candidate for reference material for mineral mixture for dairy cattle. Shape certain analytes Ca, K, Na, P, Cu, Fe, Mn, Mg, Zn and contaminants As, Cd and Pb The material was crushed, ...
Contaminantes emergentes: ocorrência e distribuição espaço-temporal no rio do Monjolinho e avaliação da remoção pela estação de tratamento de esgotos de São Carlos
(Universidade Federal de São Carlos, 2015-03-27)
This work aimed to investigate the occurrence of 12 emerging contaminants (pharmaceuticals, hormones and triclosan) in samples of influents and effluents, as well the removal in the sewage treatment plant (STP) of São ...
Desenvolvimento de procedimentos para a determinação de enxofre em diesel, biodiesel e óleo lubrificante usando ICP OES e ICP-MS
(Universidade Federal de São Carlos, 2014-02-19)
Since 1990 concerns about environmental and public health have stimulated the restrictions of maximum sulfur content in fuels allowed by legislation, especially in diesel and biodiesel, by several governmental agencies. ...
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 ...
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 ...
Produção e caracterização de material de referência de forrageira para nutrientes e contaminantes inorgânicos
(Universidade Federal de São Carlos, 2013-04-12)
The main aim of this work was to produce a candidate material for national reference material, the forage Brachiaria brizantha Stapf. cv. Marandu, containing known levels of contaminants (Cr, Pb, Cd, and As) and macro and ...
Análise foliar de plantas por espectrometria de emissão óptica com plasma induzido por laser (LIBS) e com plasma acoplado indutivamente após ablação com laser (LA-ICP OES)
(Universidade Federal de São Carlos, 2013-09-20)
It has been demonstrated that laser induced breakdown spectrometry (LIBS) can be used as an alternative method for the determination of macro (P, K, Ca, Mg) and micronutrients (B, Fe, Cu, Mn, Zn) in pellets of plant ...
Eletrodo de diamante dopado com boro para a determinação voltamétrica/amperométrica de antihelmínticos e anti-hipertensivos
(Universidade Federal de São Carlos, 2014-06-27)
In this work it was developed, firstly, one method for determination of anthelmintic albendazole (ABZ) using differential pulse voltammetry (DPV) and the boron doped diamond (BDD) electrode catholically pretreated (BDD-CPT). ...
Tratamento metrológico e quimiométrico de dados de ressonância magnética nuclear para amostras de biodiesel em diesel
(Universidade Federal de São Carlos, 2012-03-29)
The development of instrumentation in Nuclear Magnetic Resonance (NMR) increased the sensitivity of the technique, allowing samples in micro and nanogram scale can be examined. These new technologies enabled the NMR technique ...