Practice - Use of Surrogates in Analysis
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Practice Questions
Test your understanding with targeted questions
Define what a surrogate is in analytical chemistry.
💡 Hint: Think about how it functions in experiments.
What is the purpose of calibration in analysis?
💡 Hint: Consider why we need to know how instrument readings correlate to known quantities.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is a surrogate in analytical chemistry?
💡 Hint: Think about their role in experiments.
True or False: Matrix interference has no impact on the analytical results.
💡 Hint: Consider how other substances in a sample may influence your target measurements.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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