Fuels Adulteration
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Determination of Methanol in Gasoline and Ethanol Fuels by High-Performance Liquid Chromatography
Gasoline and ethanol fuels have been adulterated with methanol in Brazil. Methanol is not permitted in concentrations greater than 0.5 vol% due its toxicity but its lower price stimulates the adulteration. A new approach for quantitative analysis of methanol in gasoline and ethanol fuels is reported employing high-performance liquid chromatography coupled wi
J. Braz. Chem. Soc.. Publicado em: 2020-05
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2. ANÁLISE DE AMOSTRAS DE COMBUSTÍVEIS POR FOTOMETRIA, NIR PORTÁTIL E RMN DE 1H - UMA COMPARAÇÃO COM OS RESULTADOS ENCONTRADOS POR TÉCNICAS NORMATIZADAS
It has been recurring adulterations in fuels (such as gasoline, ethanol and diesel), being necessary the exploration of the use of more modern analytical techniques capable of controlling the quality of these fuels, since some regulated tests may be inefficient to detect the adulteration. Among them, it is highlighted proton nuclear magnetic resonance (1H NM
Quím. Nova. Publicado em: 2020-02
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3. Capacitive microsensor for evaluation of the quality of automotive fuels. / Micro-sensor capacitivo para avaliação da qualidade de combustíveis automotivos.
This work proposes a capacitive sensor with interdigitated electrodes in order to evaluate the quality of automotive fuel. Interdigitated electrodes have some interesting features for this type of sensor. Among them, they increase the capacitance by having several capacitors in parallel, and by having a structure feasible to be manufactured by conventional m
Publicado em: 2008
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4. Sistema de monitoramento em tempo real de destilações de petroleo e derivados empregando a espectroscopia no infravermelho proximo / System of monitoration in real time of destillations of petroleum and derived using the near infrared spectroscopy
Neste trabalho foi feito o monitoramento por espectroscopia no infravermelho próximo (NIR) da destilação de petróleo e gasolina, com ênfase na determinação da composição química provável das frações destiladas por atribuição de bandas de absorção e desenvolvimento de metodologia de controle de parâmetros relacionados à temperaturas de dest
Publicado em: 2005