Practice Material Specifications (9.2) - Introduction - part B - Environmental Quality Monitoring & Analysis, - Vol 2

Practice: Material Specifications

Lesson 9.2Introduction - part B

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10 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
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Quiz
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6 sample questions

Question 1.
What is a surrogate in environmental analysis?
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Think about why we need something to represent the analyte.
Question 2.
Why do we need to calculate recovery percentage?
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Consider the steps in sample preparation.
3Question 3.
What is the primary function of a surrogate in analytical chemistry?
- It increases the analyte concentration
- It mimics the analyte's behavior
- It reduces extraction time
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Remember, surrogates help us in calculations.
4Question 4.
Is it important to quantify recovery percentage in sample analysis?
- True
- False
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Think about why we check the results against what we put in.
Question 5.
You extracted 2.5 micrograms of analyte from an environmental sample. If the initial concentration was expected to be 100 micrograms, calculate the recovery percentage. How does this impact your method's reliability?
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Use the formula for percentage recovery.
Question 6.
In a solid sample, you suspect matrix interference. Your extraction yields varying amounts of the analyte. How would you modify your method to minimize this effect?
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Think about known methods that reduce matrix effects.

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