Homework Assignment #2

1. What is a dust, (to the Industrial Hygienist) and give an example?
2. Explain the difference between fumes and vapors.
3. Define aerosols and give an example.
4. Define the following and explain when they would be used:
   1. ppm
   2. mppcf
   3. mg/m3
   4. f/cc
5. What is a threshold limit value?
6. Explain the following:
   1. TLV-TWA
   2. TLV-STEL
   3. Ceiling
7. What is the difference between a PEL and a TLV?
8. What is the TLV-TWA for the following?
   1. Nicotine
   2. Acetone
   3. Ethanol
   4. Methanol
   5. Sucrose