Analysis of the components of a mixture using gas-liquid chromatography normally involves measuring the A - VCE - SSCE Chemistry - Question 1 - 2007 - Paper 1

In gas-liquid chromatography (GLC), the primary measurement that reflects the behavior of components within the mixture is the retention time. Retention time refers to the duration a particular component stays in the column before it is detected. Using a gas as the mobile phase allows for the separation of volatile compounds, which is a fundamental aspect of gas chromatography.

The retention time is influenced by various factors such as the nature of the stationary phase, temperature, and the properties of the individual compounds in the mixture. Thus, option C correctly identifies the key measurement involved in analyzing components using GLC.