Final answer:
Retention time in chromatography is not solely dependent on the Flame Ionization Detector (FID).
Step-by-step explanation:
Retention time in chromatography is not solely dependent on the Flame Ionization Detector (FID). Retention time is a measure of how long a solute stays in the column before eluting, and it is influenced by several factors including the properties of the solute, the stationary phase, the mobile phase, and the column dimensions. The FID is a detector used in gas chromatography to measure the concentration of eluted solutes, but it does not directly affect the retention time.