Practice - Quality Assurance in Analytical Techniques
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Practice Questions
Test your understanding with targeted questions
What is a surrogate in analytical analysis?
💡 Hint: Think about what aids in validating the analyte's presence.
Why do we concentrate a sample before analysis?
💡 Hint: Higher concentration leads to better detectability.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a surrogate do in analytical chemistry?
💡 Hint: Remember its role in validation.
True or False: Calibration is unnecessary if you know the analyte's exact concentration.
💡 Hint: Calibration's purpose is to ensure accuracy.
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Challenge Problems
Push your limits with advanced challenges
Given a sample, you added 200 nanograms of surrogate but recovered only 120 nanograms. What is the recovery efficiency?
💡 Hint: Use the formula for recovery efficiency.
You performed an extraction from a 2-liter sample but could only concentrate to 20 milliliters. How would you calculate the concentration factor?
💡 Hint: Remember how concentrations relate to volumes in your calculations.
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Reference links
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