Practice Calibration And Quantification (5) - Analysis Methods – Gas Chromatography

Practice: Calibration and Quantification

Lesson 5Analysis Methods – Gas Chromatography

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define calibration in the context of gas chromatography.
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Think about why we need to know how much substance we have.
Question 2.
What is retention time?
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Consider how this time can help distinguish different samples.
3Question 3.
What does calibration in gas chromatography ensure?
- Accuracy of measurements
- Volatile substances stay contained
- Retention times are adjusted
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Remember why we perform calibration.
4Question 4.
Retaining time is important because:
- True
- False
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What role does it play in distinguishing compounds?
Question 5.
You injected a standard solution of analyte A with a concentration of 100mg/L and received a detector response of 150 units. You also injected a sample with an unknown concentration and received a response of 75 units. Calculate the concentration of the unknown sample.
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Use the proportionality between measured response and concentration.
Question 6.
Describe how you would design an experiment to determine the effect of temperature on the retention time of an analyte A. Include your control and variables.
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Consider what needs to stay the same for a fair test.

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