1.4. Lecture No. 29

Try these first

1. 1.

   What is gravimetric measurement?

   Hint

   Think about how mass is measured in experiments.

2. 2.

   Define optical diameter.

   Hint

   Consider how vision works.

3. 3.

   Which method measures particulate matter by collecting it on filters?

   • Optical Measurement
   • Gravimetric Measurement
   • Electrical Mobility

   Hint

   Consider how mass is measured in a lab.

4. 4.

   True or False: The optical diameter and aerodynamic diameter are always the same.

   • True
   • False

   Hint

   Think about particle behavior in air versus light.

5. 5.

   A researcher measures particulate matter using gravimetric methods and finds 50 micrograms on the filter after a day of monitoring. Discuss how various factors might influence this measurement.

   Hint

   Think about environmental factors impacting air quality.

6. 6.

   How would one correlate the findings from optical measurements with gravimetric measurements of particulate matter? Outline a research approach.

   Hint

   Think about the importance of maintaining consistent sampling conditions in experiments.