Practice Quality Control Measures (4) - Analyte Losses in Chemical Analysis

Practice: Quality Control Measures

Lesson 4Analyte Losses in Chemical Analysis

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10 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is volatilization?
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Think about what happens when you leave a sample open.
Question 2.
Define adsorption in the context of environmental analysis.
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Consider how substances stick to surfaces.
3Question 3.
What is the primary concern of analyte loss in environmental analysis?
- Inaccurate results
- Increased costs
- Testing time
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Think about the consequences of unreliable data.
4Question 4.
True or False: Recovery efficiency is the measure of how much analyte is lost during analysis.
- True
- False
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Focus on what recovery efficiency really represents.
Question 5.
A lab conducts an analysis on samples that have been held outside at room temperature over an extended period. How might this affect the recovery efficiency of volatile acids in the samples?
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Consider the environmental factors affecting evaporation rates.
Question 6.
A researcher discovers that a certain plastic container used for storing organic solvents is adsorbing the analytes being studied. What modifications would you suggest to improve the accuracy of their analyses?
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Think about the materials that are less likely to interact with organic substances.

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