In order to guarantee the effectiveness of enforcement action, Brazilian National Petroleum Agency (ANP) has published Resolution n°9/2007, which establishes the sampling of two liters of fuel, one being a test sample and another as a control sample. In this way, it is essential that the container used for this purpose maintains the physical-chemical parameters of the sample. In an attempt to evaluate possible alternatives to the current container used by ANP, this work deals with the application of aluminum bottle containers for the storage of the ethanol fuel, E27 gasohol and B10 and B15 diesel fuel blends. Approximately 15 liters of each fuel, except diesel fuel blends, were sampled on retail stations. B10 and B15 diesel fuel blends were formulated from diesel and biodiesel obtained on distribution base, being thoroughly homogenized and portioned on one-liter aluminum containers. Three samples of each fuel were used to characterize the fuel in the beginning of the work. For each condition (ambient, 30 °C and 40 °C), three samples of each fuel were kept for 60 days and other three were analyzed as control samples, which were stored at 0 °C also for 60 days. The samples had their main parameters analyzed using the standard methodologies established in the respective specifications and the results analyzed according to the limits specified by ANP. Ethanol fuel samples had presented no significative variation on the parameters analyzed, when they were compared with the characterization samples. E27 gasohol samples had shown differences in density, ethanol, olefin, saturated and aromatic content, while diesel fuel samples had presented variations on water content, oxidation stability and lubricity. With respect to the temperature, it was possible to identify trends in most of the parameters that presented variations.
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