1.15. Measurement Standards

Try these first

1. 1.

   What is particulate matter (PM)?

   Hint

   Think about what kinds of particles might be found in the air.

2. 2.

   Define vapor phase.

   Hint

   Consider substances that can exist as gases at room temperature.

3. 3.

   What does PM stand for?

   • Particulate Matter
   • Particle Measurement
   • Pollutant Measure

   Hint

   It's the term used for both solid particles and liquid droplets in the air.

4. 4.

   True or False: Gravimetry is used to measure the mass of air.

   • True
   • False

   Hint

   Consider what gravimetry is actually measuring.

5. 5.

   Design an air quality monitoring strategy that effectively captures PM2.5 levels in a city prone to smog. What methods would you incorporate?

   Hint

   Think about how different locations in the city might have varying levels of PM2.5.

6. 6.

   Critically assess the limitations of gravimetric analysis in the context of low concentration PM monitoring.

   Hint

   What could happen if the mass of PM is too small to measure accurately?