Air Contaminants - Limits

Permissible limits to exposure of various air contaminants

Limits for various air contaminants:

PollutantPermissible Exposure Limit
(PEL)1)
Acetaldehyde 200 ppm
Acetic Acid 10 ppm
Acetone 1000 ppm
Asbestos 2) 0.1 fiber/cubic centimeter
Benzene 2) 1 ppm
Bromine 0.1 ppm
Cadmium 3) 5 μg/m3
Carbon dioxide 5000 ppm
Carbon disulfide 200 ppm
Carbon monoxide 50 ppm
Carbon tetrachloride 3) 10 ppm
Chlorine 1 ppm 4)
Chloroform 50 ppm 4)
Cresol 5 ppm
Ethanol (Ethyl alcohol) 1000 ppm
Ethyl chloride 1000 ppm
Fluorine 0.1 ppm
Formaldehyde 3) 0.75 ppm
Gasoline 300 ppm
Hydrogen cyanide 10 ppm
Iodine 0.1 ppm 4)
Iron oxide (fume) 10 mg/m3
Isopropyl alcohol 400 ppm
Lead 50 μg/m3
Manganese compounds 5 mg/m3
Mercury 1 mg/10 m3 4)
Methanol (Methyl alcohol) 200 ppm
Nitric oxide 25 ppm
Nitrogen dioxide 5 ppm 4)
Propane 5) 1000 ppm
Selenium compounds 0.2 mg/m3
Sulfur dioxide 5 ppm
Sulfur acid 1 mg/m3
Tellurium compounds 0.1 mg/m3
Tetraethyl lead 0.075 mg/m3
Toluene 200 ppm
Turpentine 100 ppm
Vinyl chloride 2) 1 ppm
Zinc oxide, fume 5 mg/m3
Zinc oxide, dust 15 mg/m3

1) PEL -Permissible Exposure Limit - 8-hour time weighted averages - An employee's exposure to any substance listed, in any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average limit given for that substance - OSHA, Occupational Safety & Health Administration

2) Human carcinogen - confirmed

3) Human carcinogen - suspected

4) Acceptable ceiling concentration

5) Simple asphyxiant

 

Related Topics

  • Physiology - Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more

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