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
Define a surrogate compound.
💡 Hint: Think about why we need to use something other than the analyte itself.
Question 2
Easy
What does matrix interference refer to?
💡 Hint: Consider how contaminants might affect readings.
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 function of a surrogate in environmental analysis?
- To identify the analyte
- To estimate recovery
- To measure concentration
💡 Hint: Remember the main purpose of using surrogates.
Question 2
True or False: Calibration is not necessary for quantitative analysis.
- True
- False
💡 Hint: Think about how we determine concentrations in lab work.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A study shows that a surrogate added to a sample yields a recovery rate of 85%. If the initial concentration of the surrogate was 150 mg/L, calculate the amount quantified during analysis.
💡 Hint: Use the recovery percentage to find the actual quantified amount.
Question 2
Discuss a scenario where matrix interference significantly impacted an environmental study's results, and provide potential solutions to mitigate this issue.
💡 Hint: Think about specific pollutants and potential interfering compounds.
Challenge and get performance evaluation