Lecture 5
An Introduction to Spectroscopy
Electromagnetic radiation, electromagnetic wave
Emission, absorption, fluorescence
)2sin(0 tEEphase
frequency
E
Energy (kJ/mol)
Frequency(Hz)
Wavelength (m)
NMRESR
IRRaman
UV-visVacuum UV
X-rayspectroscopy
hE frequency
hc
E wavelength
1
hcE wavenumber
Intensity, Absorbance,Transmittance
Energy, frequency,wavenumber
Wavelength
Spectrum
bands
Lines
Hz
Intensity
4 8 12 16
Emission
Absorption source sample
Fluorescencesource sample
Secondary emission
Light Source
Sample
Monochromator(filter,
wavelength selector)
Detector
SpectrometerData Processing
Light Source
Sample
Monochromator(filter,
wavelength selector)
Detector
Spectrometer
Data Processing