Question

Workers in a 1000 m³ processing room in a plastics factory are exposed to vinyl chloride (C₂H₃Cl) gas, which is emitted when the plastic pellets are heated to make the final products.

a. If the source strength of C₂H₃Cl is 80 mg/h and the air change rate in the room is 0.21/h, what is the steady state concentration of C₂H₃Cl (in mg/m³ and in ppmv) in the room at 25⁰C and 1 atm? Assume that C₂H₃Cl is conservative and that the concentration of the gas in the ambient air is zero.

b. What is the concentration (in ppmv) in the same room 6 hours after all the machines are turned off at the end of the day?

Answer 1