Select the best choice of light source for the specific type of spectroscopic ap

Question

Select the best choice of light source for the specific type of spectroscopic application. Fill in the letter i) through vi) of your preferred choice in the blanks provided.

A. Atomic absorption determination of Bi in aqueous samples           _______


B. Mid-IR absorption spectrum of an organic compound                    _______


C. Raman spectra using red or near-IR monochromatic incident light       _______


D. UV absorption spectrum of a chromophore in the 200-400 nm range           _______


E. X-ray fluorescence measurements of Pb in soil          _______


F. Visible absorption spectrum of a ML+n metal-ligand complex        _______

Choices:
i)   Evacuated tube where a metal target is bombarded by ~ 50 KeV electrons

ii) A deuterium lamp operating in the “Rydberg continuum” mode

iii) A tungsten filament incandescent lamp

iv) A “Nernst Glower”

v) A hollow cathode lamp containing an appropriately constructed cathode

vi) A light-emitting diode emitting low-energy visible photons

Explanation / Answer

Answer:-

A. v) A hollow cathode lamp containing an appropriately constructed cathode

B. iv) A “Nernst Glower”
C. vi) A light-emitting diode emitting low-energy visible photons
D.ii) A deuterium lamp operating in the “Rydberg continuum” mode
E. iii) A tungsten filament incandescent lamp
F. i)   Evacuated tube where a metal target is bombarded by ~ 50 KeV electrons

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