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Gas Chromatography Challenge

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Gas Chromatography Challenge

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About this activity

Come and test your understanding in gas chromatography!

Created by

Alicia Wong
Alicia Wong
Canada

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Gas Chromatography Challenge
 

Gas Chromatography ChallengeOnline version

Come and test your understanding in gas chromatography!

by Alicia Wong
1

A factor affecting plate height that is absent in gas chromatography

Hints

One of the three terms in the van Deemter equation for plate height

Which type of column does gas chromatography have?

What does this represent?

2

By a factor of how much does the elution time need to decrease to cause a decrease in peak broadening by longitudinal diffusion by a factor of 3?

Hints

3

Which factor dominates peak broadening above the optimum linear velocity?

Hints

4

The type of column that is used for preparative chromatography

Hints

Which column gives higher capacity?

5

A type of asymmetric peaks caused by overloading gas chromatography

Hints

Does an overloaded GC column have a higher or lower retention capacity?

An overloaded GC column causes the stationary phase to resemble the solute.

6

Using a non-polar stationary phase in the GC column, which property of analyte is the primary factor affecting retention?

Hints

7

The type of injection method for GC that requires solvent trapping or cold trapping.

Hints

It involves the injection of a larger volume of sample slowly.

It creates broadened peaks if solvent trapping or cold trapping are not used.

8

A GC detector that is not very sensitive but is universal and non-destructive. It can be easily paired with other detectors.

Hints

Its principle involves the difference in ability to transport heat between analytes and carrier gas.

9

An extremely sensitive GC detector particularly useful for halogenated analytes.

Hints

Its principle relies on the ability of analytes to attract electrons emitted by a radioactive source.

10

An ionization technique in mass spectrometry that produces MH+ as the most abundant ion.

Hints

It involves the ionization of a reagent gas such as methane gas.

It produces less fragmentation and is a soft ionization technique.

 
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