Parent document       Health effects of NOX

Concentration [ppm]

Duration Exposure Effects

above 0.062 to 0.109

2 to 3 year risk of respiratory disease

0.12

instantly immediate perception - unpleasant smell

0.25

8 months broken leaves in orange trees

0.50

35 days clorosis

0.25

4 hours/day for 6 days Effects on the pulmonary system of rabbits

Health effects of HNO3

Concentration [ppm]

Duration exposure

Effects

0.15 to 0.25

1 to 4 days

toxic

1 to 2

3 to 4 minutes

cardiovascular distress (in normal people

5

An hour

breathing difficulties

10

 

lung damage and nasal hemorrhages