Good Morning to all of you. I’m Raiuly Mandia and I’m going to report about Atomic Absorption and Atomic Fluorescence Spectrometry.
What is Atomic Spectroscopy?
Atomic Spectroscopy is the study of the electromagnetic radiation absorbed and emitted by atoms. Since unique elements have characteristics spectra,atomic spectroscopy, specifically is applied for determination of elemental compositions.
(2nd picture)This is the Electromagnetic radiation,in further discussion atomic spectroscopy is the study of electromagnetic radiation,so let’s discuss what electromagnetic radiation is...
Electromagnetic Radiation(EM) is a form of energy that is all around us and takes many forms, such as radio waves,microwaves,x-rays,gamma-rays and visible light.…show more content… In the word itself, it atomizes a sample using a flame. So why we need to use it ?
We must atomize analyte in a flame, graphite furnace or inductively coupled plasma because we can’t done any process if it’s not in atom nature. Flame spectrometers usually use a premix burner, in which fuel, oxidizer, and sample are mixed before entering the flame.
In the 8th slide.this picture is the actual Flame Atomizer, which is composed of inlet of sample,nebulizer,oxidant inlet,glass bead,baffles, spray chambers,burner head and flame. In the 9th slide,this is the schematic of flame atomizer.
Let’s now discuss how this Flame atomization works step by step.
First,the liquid sample is drawn into the pneumatic nebulizer by the oxidizer(generally air) as it flows quickly past the tip of the capillary
Second, the liquid breaks up into a fine mist as it leaves the capillary.
Third, the mist breaks up into even smaller particles upon hitting a glass bead. This formation of small particles is called nebulisation.
Fourth, when these fine particles are suspended in a gas, they create an aerosol.
Fifth, the mixture of fuel,oxidizer, and sample flows past baffles that promote further mixing and block large