Which of the following gases is unsuitable for use as a GC carrier gas?Select one:a.Oxygenb.Nitrogenc.Argond.Helium
Question
Which of the following gases is unsuitable for use as a GC carrier gas?
Select one:
- a. Oxygen
- b. Nitrogen
- c. Argon
- d. Helium
Solution
To determine which gas is unsuitable for use as a gas chromatography (GC) carrier gas, let's analyze the options provided:
-
Oxygen: While oxygen is a reactive gas, it can lead to oxidation of samples or reaction with the stationary phase in the column, which can compromise the integrity of the analysis. Therefore, it is generally unsuitable as a carrier gas.
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Nitrogen: This is a common and safe choice for a carrier gas in GC. Nitrogen is inert and does not react with most substances, making it a reliable option.
-
Argon: Similar to nitrogen, argon is also inert and can be used as a carrier gas. However, it is less common than nitrogen.
-
Helium: Helium is widely used as a carrier gas in GC due to its inertness and ability to provide good separation qualities.
Conclusion:
The gas that is unsuitable for use as a GC carrier gas is Oxygen.
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