Quiz 1

Question 1

Draw a schematic diagram to show relation between damage, control and total costs for one pollutant at one location.

Question 2

The “zero-damage” air quality control philosophy is

A) Emission Tax Philosophy
B) Emission Standard Philosophy
C) Air Quality Standard Philosophy
D) Cost-benefit Philosophy

Answer 2

C) Air Quality Standard Philosophy

Question 3

The ozone concentration at a monitoring site is measured as .11 ppm at 25 C and 1 atm. What is the concentration in ug/m^3 at 25 C and 1 atm? (MW of ozone is 48) (Show calculations)

A) 155 ug/m^3
B) 190 ug/m^3
C) 215 ug/m^3
D) 260 ug/m^3

Answer 3

C) 215 ug/m^3

(1000*.11 ppm * 48 g/mol) / 24.45
= 215 ug/m^3

Question 4

A PM 2.5 sampler ran for 24 hr at an average flow rate of 16.7 L/min. The tara weight of the fresh filter was .14 g and the gross weight of the filter, dried to the same humidity as the fresh filter was .1405 g. What was the average PM2.5 concentration (in ug/m^3) in the air drawn through the sampler?

Answer 4

See pic

Question 5

Winter time smog

Answer 5

London Smog
SO2 + Particles + Sunlight -> smog

Question 6

What is isokinetic sampling for particulate matter?

Answer 6

-measuring particle matter samples by identifying particles with the same motion or velocity
-measuring particulate matter of the same size

Question 7

The reference method to measure non-methane hydrocarbon (NMHC) is

A) Gravimetric method
B) Chemiluminescent
C) Flame ionization dection (FID)
D) Non-dispersive inferred (NDIR) adsorption

Answer 7

C) Flame ionization dection (FID)

Question 8

At near traffic sites, mineral components (iron, silicon, calcium, sodium, potassium) can be found in a abundant at the following sizes ( check all that apply)

A) 5.8 - 9.0 um
B) 4.7 - 5.8 8um
C) .7 - 1.1 um
D) < .04 um

Answer 8

A) 5.8 - 9.0 um
B) 4.7 - 5.8 8um
C) .7 - 1.1 um

Question 9

In February 2020….. what class of organic compounds that cause public health concern from burning firefighting foams in the U.S. military installations.

A) Volatile organic compounds (VOCs)
B) Polycyclic aromatic compounds (PAHs)
C) Per- and poly-fluoralkyl compounds (PFAS)
D) Polychlorinated dibenzodioxins (PCDD)

Answer 9

C) Per- and poly-fluoralkyl compounds (PFAS)