Abstract
Chemical abundances have been derived for a sample of more than 20 PNe and several compact HII regions in the galaxy NGC 300, for which [OIII] electron temperatures have been determined based on the line ratio [O III]λ λ4363/5007. The analysis of these data shows a clear abundance gradient for HII regions in the galactic disk. This gradient is flatter and more disperse for PNe. Some differences between HII region and PN abundances are discussed.
