equipped with the respective hollow cathode lamp was employed for the determination of Mn in bioethanol samples. The flow rates of air and acetylene were 3.5 and 1.5 L min-1. Other conditions were wavelength (297.5 nm), slit width (0.2 nm), lamp current (5.0 mA), and height of observation (15 mm). An analytical curve between 0.1 and 2.0 mg L-1 was obtained with a detection limit of 10 μg L-1 of Mn (II).