Spectral interference: 

In analysis of samples, it might be essential to correct for spurious, spectral interference. These arise while the matrix emission overlaps or lies too close to the emission of the sample and result within the decrease in resolution of the spectrum, for instance, (As/Cd), (Co/In), (Co/Hg), (Fe/Mn) and (Ni/Sn) displays fluorescence at same wavelengths. Within AFS the spectral interferences consists of the scattered light, non analyte fluorescence, molecular fluorescence and the light emission through the atom cell. Of these, a scattered light and the atoms cell emission are more crucial while the other two are not very common. Thus, this type of matrix effect is rare while hollow cathode lamps are used as basic sources since the intensity is low.