The ability of radical scavengers, such as iodine, to affect the yield of nitrogen-containing species has previously been used to give insight on the mechanism of char-N conversion to NO during fluidized bed coal combustion. This paper examines the effect that the addition of a radical scavenger (HBr) has on the conversion of char-N to NO for pulverized coal particles at temperatures varying from 1173 K to 1488 K and with two different background NO concentrations (50 ppm and 400 ppm). The experimental results are used to explain the interactions of homogeneous and heterogeneous pathways for the destruction and formation of NO from char-N and to propose a kinetic mechanism that takes into account these interactions. This mechanism is employed to justify previous experimental data reported in the literature, for the conversion of char-N to NO at pulverized coal conditions.