The atomic absorption spectrometry (AAS) is a technique used
worldwide, because it combines the virtues of simplicity, sensitivity and
relatively low cost.
In recent years, the F AAS has been one of the most
commonly adopted techniques because it has sufficient sensitivity to
determine the main organometallic compounds in fuels [12].
The preparation of viscous and complex samples such as fuel is not
a simple task, since the samples must be converted into a compatible
form with the instrument used