Atomic Absorption Spectroscopy (AAS)I. Mentor : Prof. Kuniyuki KITAGAWA Assistant: Dr. Eng.Nelfa Desmira. Visible and Ultraviolet Light. Uv -Vis Spectrometer Double Beam. Light Source UV (Deuterium/D2). Diffraction Grating. 1a. 2. Mirror 1. Slit 1. 1b.
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Atomic Absorption Spectroscopy (AAS)I
Prof. Kuniyuki KITAGAWA
Light Source UV (Deuterium/D2)
Light Source Vis (Tungsten)
where A is the measured absorbance
The relationship between absorbance and transmittance is illustrated in the following diagram:
Atomic Absorption Spectroscopy(AAS) II
Prof. Kuniyuki Kitagawa
Dr. Eng. NelfaDesmira
h = Ei– E0
i = 1.2 and 3
h = Ej – Ei
i = 1.2 and 3
Beer Lambert Law :
A = absorbance/Emission
T = Transmitance
Atomic Absorption Spectroscopy :
The term used when the radiation absorbed by atoms is measured
E0 and Ej : energy levels where Ej higher than E0.
Arrow line: Absorption
Flame Atomic Absorption Spectrometry
AAS consist of two type: Flame AAS and Graphite-furnace AAS.
Please open this link : http://www.cee.vt.edu/ewr/environmental/teach/smprimer/aa/aadiag.gif