2013
DOI: 10.1590/s0100-40422013000300008
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Avaliação de laboratórios brasileiros na determinação de alguns parâmetros de qualidade de biocombustíveis

Abstract: Recebido em 9/5/12; aceito em 26/9/12; publicado na web em 24/1/13 EVALUATION OF BRAZILIAN LABORATORIES FOR DETERMINING QUALITY PARAMETERS OF BIOFUELS. This work shows the results of a Proficiency Testing performed by a partnership between INMETRO and ANP. The performance of 49 Brazilian laboratories (using the z-score statistical test) in determining 10 quality parameters of ethanol fuel and biodiesel was evaluated. The certified reference values were provided by INMETRO, allowing a more rigorous assessment o… Show more

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“…One of the parameters used to assess the quality of hydrous ethanol fuel (HEF) is the potential of the hydrogen ion, called pH. This quality parameter has been applied to indicate the risk of corrosion in vehicle engines, formation of deposits on metal parts, and clogging of filters, injection nozzles, and fuel pump, so it is of singular importance that the pH is measured from the effective way [3] [4].…”
Section: Introductionmentioning
confidence: 99%
“…One of the parameters used to assess the quality of hydrous ethanol fuel (HEF) is the potential of the hydrogen ion, called pH. This quality parameter has been applied to indicate the risk of corrosion in vehicle engines, formation of deposits on metal parts, and clogging of filters, injection nozzles, and fuel pump, so it is of singular importance that the pH is measured from the effective way [3] [4].…”
Section: Introductionmentioning
confidence: 99%
“…A qualidade do etanol combustível é essencial para garantir o bom rendimento do motor. A presença de contaminantes ou pH irregular podem ocasionar formação de depósitos nas peças metálicas, e entupimento de filtros, bicos injetores e bomba de combustível, como também desgaste e corrosão das peças do motor [3].…”
Section: Contextualizaçãounclassified