Flame Photometry and its applications Flame photometry is a process wherein the emission of radiation by neutral atoms is measured. The neutral atoms are obtained by the introduction of the sample into the flame. Hence the name flame photometry. Since radiation is emitted, it is also called flame emission spectroscopy. Currently, it has become a necessary tool in the field of analytical chemistry. Flame photometer can be used to determine the concentration of certain metal ions like sodium, potassium, lithium, calcium and cesium etc. In flame photometer spectra the metal ions are used in the form of atoms. 1 . Flame photometer working principle When a solution of metallic salt is sprayed as fine droplets into a flame. Due to the heat of the flame, the droplets dry leaving a fine residue of salt. This fine residue converts into neutral atoms. Due to the thermal energy of the flame, the atoms get excited and after that return to the ground state. In this process of return to the groun