Practice Environmental Quality: Monitoring And Analysis (1) - Analysis Methods – Liquid Chromatography

Practice: Environmental Quality: Monitoring and Analysis

Lesson 1Analysis Methods – Liquid Chromatography

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10 questions

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6 sample questions

Question 1.
What is the main advantage of liquid chromatography over gas chromatography?
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Think of situations where vaporization could be a problem.
Question 2.
Define retention time in chromatography.
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Focus on the timing aspect of the process.
3Question 3.
What is the main function of the mobile phase in liquid chromatography?
- To create bubbles in the column
- To carry analytes through the column
- To change temperature settings
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Consider what moves through the device.
4Question 4.
True or False: Liquid chromatography allows for the analysis of vaporized samples only.
- True
- False
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Think about the state of the samples being analyzed.
Question 5.
Imagine you're tasked with analyzing a sample that degrades quickly when heated. Would you choose gas chromatography or liquid chromatography? Justify your choice.
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Think about the thermal stability of the sample.
Question 6.
You notice that your flow rates are becoming unstable during liquid chromatography. What steps would you take to troubleshoot and stabilize the flow?
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Consider both equipment and conditions that affect flow.

6 more questions in this section. Enroll free to practise them all.