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Biochemistry - Gas Chromatography

Exercise : Gas Chromatography - Section 1
  • Gas Chromatography - Section 1
11.
A retention gap is placed between the injector and the front of the column to
retain contaminants and prevent them from reaching the column
retain the sample and release it gradually to the column
prevent backflush of the injected solution
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Which of the following detectors give mass flow-dependent signals?
Electron capture detector
Field ionisation detector
Thermal conductivity detector
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Headspace analysis is carried out in order to
analyse volatile compounds from solid or liquid samples
determine the psychological state of the tutor
analyse the column contents ahead of the sample
determine non-volatiles
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Split injection is carried out by
splitting the sample into smaller portions to inject sequentially
splitting the sample into smaller portions to inject at the same time through parallel ports
splitting off some of the sample so that it does not enter the column
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
What does the retention factor, k', describe?
The distribution of an analyte between the stationary and the mobile phase
The migration rate of an analyte through a column
The velocity of the mobile phase
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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