Spectral Interferences:

These refer to the interferences which affect the spectral intensity or resolution. There are various kinds of spectral interferences that are explained below.

The first type of interference arises while two elements exhibit spectra, that partially overlap, and both emit radiation at a few particular wavelengths. The detector cannot distinguish among the sources of radiation and records the total signal, therefore resulting in incorrect answer. Such interferences are more general at high flame temperatures since numerous spectral lines are produced at high temperatures. For instance, the Fe line at 324.73 nm overlaps along with the Cu line at 324.75 nm. Such interference could be overcome either through taking measurements at an instead wavelength that has no overlap, if available, or through removing the interfering element through extraction. Alternatively, one might make a calibration curve that is prepared from a solution having same quantities of the interfering element.