Practice Sensitivity And Minimum Detection Limit (1.1.3) - Environmental Analysis of Organics in Water

Practice: Sensitivity and Minimum Detection Limit

Lesson 1.1.3Environmental 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.
What does sensitivity in chemical analysis refer to?
Show hintHide hint
Think about how sensitive the instrument is to variances.
Question 2.
Define Minimum Detection Limit.
Show hintHide hint
What is the threshold a machine needs to see the analyte?
3Question 3.
What is the purpose of sensitivity in analytical methods?
- To determine the weight of a sample
- To detect small amounts of changes in analyte concentration
- To measure temperature
Show hintHide hint
Think about what sensitivity helps with in detecting chemicals.
4Question 4.
True or False: The Minimum Detection Limit indicates the highest concentration an instrument can measure.
- True
- False
Show hintHide hint
Remember what MDL stands for.
Question 5.
Given a sample with a concentration of 0.75 mg/L and an instrument that cannot detect below 1 mg/L, outline the steps to prepare the sample for detection.
Show hintHide hint
Consider ways to increase concentration without losing the analyte.
Question 6.
Assuming a calibration curve shows a linear relationship with a slope of 2 and a y-intercept of 0.5, derive the concentration of an analyte that gives an instrument response of 4.
Show hintHide hint
How do you use the slope and intercept to calculate concentration?

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