Air Pollution Toxicology I

Question 1

What are the EPA Criteria Pollutants?

Answer 1

1. Particulatematter(PM10 andPM2.5)
2. Sulfurdioxide(SO2)
3. Ozone(O3)
4. OxidesofNitrogen(NOx NOx)
5. Lead(Pb)
6. Carbonmonoxide(CO)

Question 2

What pollutants are decreasing and increasing?

Answer 2

MarkedincreaseinVOCssince1920
- AlsosteadyincreasesinSO2 andNOx
DecreaseinPMandPb

Question 3

What pollutants might be present in the vicinity of a smelter?

Answer 3

SOx,Metals,andPM may dominate

Question 4

What pollutants might be present at a refinery?

Answer 4

VOCs may dominate

Question 5

What pollutants come from automobiles?

Answer 5

CO,VOCs,andNOxmaydominate

Question 6

What are the greenhousegases?

Answer 6

 Carbondioxide–The majorone
 Methane‐cattleandlandfills
 Nitrousoxide
 Halocarbons

Question 7

What constitutes photochemical smog?

Answer 7

Nitrogen oxides and VOCs react to sunlight

= NO2 + O2