GC Separates Small Volatile Molecules

Gas chromatography (GC) separates and detects small, volatile molecules in the gas phase. The sample can start as a gas or as a liquid that is vaporized in the injection port. GC is usually used for compounds under 1,000 Da because larger molecules are harder to vaporize. It is often chosen for non-aqueous samples and for or...

Gas Chromatography, or GC, is a technique that is used to separate, detect, and quantify small volatile compounds in the gas phase.

In GC, liquid samples are vaporized, then carried by an inert gas through a long, thin column. Analytes are separated based on their chemical affinity with a coating on the inside of the column.

Because ...