Which of the following is the principle of Atomic Absorption Spectroscopy?
A. Radiation is absorbed by non-excited atoms in vapour state and are excited to higher states
B. Medium absorbs radiation and transmitted radiation is measured
C. Colour is measured
D. Colour is simply observed
Answer:A
Which of the following is the principle of Atomic Absorption Spectroscopy?
A. Radiation is absorbed by non-excited atoms in vapour state and are excited to higher states B. Medium absorbs radiation and transmitted radiation is measured C. Colour is measured D. Colour is simply observed
Explanation: Atoms in gaseous state absorb the radiation and are excited to higher state. Since, the higher state is unstable the atom returns the ground state with the emission of radiation which is measured.