Practice Recovery And Matrix Interference (1.1.8) - Environmental Analysis of Organics in Water

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define an analyte.
Show hintHide hint
What are we trying to measure in an analysis?
Question 2.
What is matrix interference?
Show hintHide hint
Think about how other chemicals can change our results.
3Question 3.
What does recovery measure in analytical processes?
- The total amount present
- The percentage of analyte returned after analysis
- The cost of extraction
Show hintHide hint
Think about what 'recovery' means in a scientific context.
4Question 4.
True or False: Matrix interference only comes from similar analytes.
- True
- False
Show hintHide hint
Consider that anything in the sample can impact results.
Question 5.
Design a recovery test comparing a spike with distilled water and a natural water sample. Discuss expected outcomes.
Show hintHide hint
How might natural substances influence your results?
Question 6.
Evaluate how you would improve recovery rates in a solid-phase extraction setup.
Show hintHide hint
What attributes of the materials are key to success in extraction?

5 more questions in this section. Enroll free to practise them all.