Practice - Concentration Steps
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Practice Questions
Test your understanding with targeted questions
What is a surrogate in analytical chemistry?
💡 Hint: Think about what helps analyze the main compound.
Why do we extract samples with hexane?
💡 Hint: Consider the solubility properties of hexane.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of using a surrogate in environmental analysis?
💡 Hint: Reflect on the role of surrogates during analysis.
True or False: The concentration process is necessary to improve the likelihood of detecting trace analytes.
💡 Hint: Think about detection limits.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have added a surrogate of 0.1 mg to 1 L of water. After extraction, you recover only 0.05 mg. Calculate the recovery percentage. What does this indicate about the extraction efficiency?
💡 Hint: Remember the recovery formula!
If an instrument provides a response of 90,000 units correlating to 60,000 m and your calibration curve suggests a 2:3 ratio, calculate the unknown mass of the analyte in nanograms.
💡 Hint: Use the relationship between response and calibration ratio to solve.
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