Analyte detection
Analyte detection - contextDetection techniques - purpose
Chromatography - detector systemDetectors ... ?
Coupling chromatography & detectors
Flame ionization detector (FID) 
General description of FID 
Illustration of FID Detailled description of FID Electron Capture Detector (ECD) General description of ECD Illustration of ECD Detailled description of ECD Comparison FID and ECD Type of detector UV-visible absorption detector General description of UV-vis-AD UV frequency range Principles of light absorption Jablonski scheme Chromophores Illustration of the UV-vis-AD Detailed description of UV-vis-AD Fluorescence detector (FD) General description of FD Fluorescent light Illustration of FD Detailled description of FD 
Mass spectrometric detection (MSD) 
Brief description of MSD
End of lessonTerminologyPrinciples of light absorption
energy states of organic molecules
| electronic energy | > | distribution of valence electrons in orbitals | |||
| vibrational energy | > | vibration of molecular bonds | |||
| rotational energy | > | rotation of molecular bonds | |||
| |
total energy |
... |
often visualized in 'Jablonski schemes' |
 |
|
| ground state |
 + energy in the form of photons |
excited states |
distribution of energy states:
(i) depends on the chemical structure of the molecule
(ii) is discrete rather than continuous
