2.2. Department of Chemical Engineering

Try these first

1. 1.

   What is concentration?

   Hint

   Think about how you express the strength of a solution.

2. 2.

   What is TSS?

   Hint

   Consider its significance in water quality assessments.

3. 3.

   What is the relationship between sample volume and detection limit?

   • Higher volumes allow detection of lower concentrations
   • Higher volumes increase detection limit
   • There is no relationship

   Hint

   Consider how the volume you collect affects what you can potentially measure.

4. 4.

   True or False: The detection limit is the same as the sensitivity of an instrument.

   • True
   • False

   Hint

   Think about the definitions of both terms.

5. 5.

   You need to measure TSS in a lake with an expected concentration of 0.3 mg/L. Your balance's detection limit is 0.1 mg/L. What is the minimum sample volume you would need?

   Hint

   Consider how you can calculate the volume based on your detection goal.

6. 6.

   In a scenario where the precision of your measurements varies significantly over time, how would you adjust your methodology to improve reliability?

   Hint

   Think about how averaging can aid in minimizing random errors.