What is the working principle of GC?
I only know GC is a qualititative method to fractionate the gaseous mixture into simplier compounds, depending their retention time in separating column. GC can be catagorized into gas-gas chromatography and gas-liquid chromatography. Their retention time depends on the polarity of stationary phase and mobile phase.The more polar the stationary phase is used, the more soluble in stationary phase is the polar mobile phase, the longer is the retention time of that mobile phase.
Do anyone has some supplementary information or opinion in the above wording?