Pharmacy Study Material

Free pharmacy material Plasma Emission Spectroscopy INTRODUCTION The plasma is used as an atomisation source for emission spectroscopic method is known as plasma emission spectroscopy. Plasma is defined as a cloud of highly ionised gas which is composed of electrons. In plasma emission spectroscopy, the gas usually used is argon which is ionised by the influence of a strong electrical field either by a direct current or by radio frequency. Based on the current applied, plasma emission spectroscopy is classified as the following: Direct current plasma emission spectroscopy. Inductively coupled plasma emission spectroscopy. Plasma was first identified by Sir William Crookes in 1879 in a Crookes tube. PRINCIPLE The main principle involved here is atomisation process. It is carried out by the following steps: An aqueous solution in a flame gets desolvated and converted into a solid form. Then it is vaporised . This obtained gas is su...