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Disadvantages & Advantages of an GC


Disadvantages & Advantages of an GC.

Gas chromatography (GC) is an analytical method which is used for the separation of an volatile substance from a give mixture of compounds which are very difficult to separate and analyse.

This type of chromatography separates the molecules based on the volatility of a substance.

The substance with more volatility will separate out quickly while the substance with less volatility will elute out slowly.

Advantages 

This method has a  high resolution power compared to other methods.

This method has high sensitivity when used with thermal detectors.

This technique gives relatively good accuracy and precision.

Separation and analysis of sample very quickly.

Sample with less quantity is also separated. 

Disadvantages

Only volatile samples or the sample which can be made volatile are separated by this method.

During injection of the gaseous sample  proper attention is required.

The sample of gas which is about to inject must be thermally stable so that it does not get degraded when heated.


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