Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is an analyte?
💡 Hint: Think about what we are trying to detect or quantify in a sample.
Question 2
Easy
What does LLE stand for?
💡 Hint: Recall the method involving the transfer of analytes between two liquids.
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 the first step to analyze an analyte in water?
- Direct Measurement
- Extraction
- Dilution
💡 Hint: Think about the processes involved before measurement can occur.
Question 2
True or False: Solid-Phase Extraction uses a liquid solvent to isolate analytes.
- True
- False
💡 Hint: Consider the differences between solid and liquid extraction methods.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A sample with an initial analyte concentration of 10 mg/L must be diluted to below the MDL of 1 mg/L. How much water must you add to reduce this concentration to 0.5 mg/L?
💡 Hint: Think about how dilution works and the ratio of concentrations.
Question 2
If 5 mg of an analyte is spiked into a 500 mL water sample and during extraction only 3.2 mg is recovered, what is the recovery percentage?
💡 Hint: Use the recovery formula based on the spike you added.
Challenge and get performance evaluation