Human Response to One Hour Pollutant Exposure (Turco, p194)
Symptom
Concentration
Part per million by mass
Pollutant
Death
600 ppmm
Vomiting, collapse
(tobacco smoke, 400 ppmm)
300 ppmm
Throbbing headache
(freeway background, 100 ppmm)
100 ppmm
Time distortion
(typical urban level)
10-30
ppmm
CO
CO sticks to
hemoglobin, forming carboxyhemoglobin (COHb), which
reduces the capacity of hemoglobin to carry O2 to cells