Practice Environmental Quality: Monitoring And Analysis (1) - Introduction - part B

Practice: Environmental Quality: Monitoring and Analysis

Lesson 1Introduction - part B

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9 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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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define a surrogate compound.
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Think about why we need to use something other than the analyte itself.
Question 2.
What does matrix interference refer to?
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Consider how contaminants might affect readings.
3Question 3.
What is the function of a surrogate in environmental analysis?
- To identify the analyte
- To estimate recovery
- To measure concentration
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Remember the main purpose of using surrogates.
4Question 4.
True or False: Calibration is not necessary for quantitative analysis.
- True
- False
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Think about how we determine concentrations in lab work.
Question 5.
A study shows that a surrogate added to a sample yields a recovery rate of 85%. If the initial concentration of the surrogate was 150 mg/L, calculate the amount quantified during analysis.
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Use the recovery percentage to find the actual quantified amount.
Question 6.
Discuss a scenario where matrix interference significantly impacted an environmental study's results, and provide potential solutions to mitigate this issue.
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Think about specific pollutants and potential interfering compounds.

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