Análise da qualidade do etanol combustível e da gasolina tipo C comercializados nos postos de combustíveis de Sinop–MT

Abstract

Due to the major fuel consumer in Brazil, one of the consumers concerns is the adulteration, since the price variations and the risk to the mechanical damages in the cars, claim to the attention with the purchased quality fuel as an essential matter to prevent future loses. The National Petroleum Natural Gas and Fuel Agency (ANP) is the government company responsible to overseeing the fuel activities in Brazil. In addition to monitoring, ANP establishes resolutions about que quality and specifications to each fuels offered in Brazil. Ethanol Fuel and Gasoline type C are the most consumed fuels in Brazil. So, they are the most susceptible fuels to be adulterated by both, distributors and gas stations. In Sinop-MT city there are 58 registered gas stations that trades fuels from about eight distributors. To analyze the quality of gasoline type C and Ethanol Fuel offered in Sinop-MT, were held samples of the two fuels from 10 gas stations of several distributor. The performed analyses were: hydrogen ionic potential (pH), conductivity, density, concentration and methanol percentage for both, Ethanol and Gasoline type C. The obtained results were compared to those stipulated by the specification in the current legislation. Overall, the Gasoline type C samples showed higher solvents percentages than stipulated by ANP, and the other parameters were in accordance to the legislation. On the other hand, Ethanol Fuel samples presented lower solvent contends, or ethanol concentration above that recommended by ANP. The other analyzes also showed results within the stipulated standards.