3. Composition and Analysis of Particulate Matter

Try these first

1. 1.

   What is gravimetric measurement?

   Hint

   Think about how we measure weight directly.

2. 2.

   Name a standard particle's characteristic.

   Hint

   What does 'standard' tell you?

3. 3.

   What is the primary purpose of gravimetric measurement?

   • To analyze organic composition
   • To measure mass
   • To determine particle size

   Hint

   Think about the technique's core function.

4. 4.

   True or False: Optical methods always provide the same size measurements as gravimetric methods.

   • True
   • False

   Hint

   Consider how each method approaches measurement.

5. 5.

   Consider a scenario where two different instruments yield differing PM 10 measurements. Discuss how you would investigate the discrepancies and the importance of standards in your findings.

   Hint

   Focus on the role of calibration and controlled experiments.

6. 6.

   Analyzing a roadside PM sample shows a significant amount of organic carbon. Propose a method to quantify the organic carbon and justify your chosen approach.

   Hint

   Think about the tools and techniques discussed for organic analysis.