Practice Use of Surrogates in Analysis - 3 | 5. Introduction - part B | Environmental Quality Monitoring & Analysis, - Vol 2
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Knowledge

3 - Use of Surrogates in Analysis

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define what a surrogate is in analytical chemistry.

💡 Hint: Think about how it functions in experiments.

Question 2

Easy

What is the purpose of calibration in analysis?

💡 Hint: Consider why we need to know how instrument readings correlate to known quantities.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is a surrogate in analytical chemistry?

  • A method of analysis
  • A compound that represents an analyte
  • A type of calibration

💡 Hint: Think about their role in experiments.

Question 2

True or False: Matrix interference has no impact on the analytical results.

  • True
  • False

💡 Hint: Consider how other substances in a sample may influence your target measurements.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You conducted an extraction on a water sample containing an unknown concentration of analyte A. You added 100 micrograms of surrogate B and recovered 0.15 micrograms. Calculate the recovery percentage and discuss potential reasons for the low recovery.

💡 Hint: Consider factors that might affect the extraction and analysis.

Question 2

Explain how different matrix types impact the recovery rates of analytes and surrogates. Offer at least two specific examples.

💡 Hint: Think about the physical properties of solids and liquids.

Challenge and get performance evaluation