Normal Phase Chromatography (NPC)
Advantages:
* Higher resolution for polar compounds
* Compatible with non-polar mobile phases
* Stationary phase is more stable and has a longer lifespan
Disadvantages:
* Lower resolving power for non-polar compounds
* The mobile phase is more likely to evaporate
* The stationary phase can be more expensive
Reversed Phase Chromatography (RPC)
Advantages:
* Higher resolution for non-polar compounds
* Compatible with aqueous mobile phases
* Faster analysis time
* Greater sample capacity
Disadvantages:
* Lower resolution for polar compounds
* The stationary phase is less stable and has a shorter lifespan
* The stationary phase can be more expensive
Ultimately, the choice between normal phase and reversed phase chromatography depends on the specific analytes of interest and the desired separation performance.