Carbon Monoxide

Reference Levels

Carbon Monoxide molecule

CO Molecule

  • .5 - 5 ppm: typical range in homes with no gas stoves

  • 5 - 15 ppm: typical range in homes with gas stoves

  • 1-70Ìıppm:ÌıProlonged exposure to this range typically does not cause symptoms in healthy people

  • > 70 ppm:Ìı Symptoms of CO poisoning will begin to appear in healthy people

  • > 150 - 200 ppm: Dangerous levels of CO exposure

CO

This pollutant is produced byÌıthe incomplete (non-ideal) burning of fuels such as natural gas, coal, wood, gasoline, etc.Ìı Common sources of carbon monoxide are unvented gas space heaters, gas stoves, fireplaces, generators, gasoline-powered equipment, including automobiles.Ìı In particular, dangerous sources can be old or poorly functioning combustion devices.Ìı In high enoughÌıquantities, this pollutant can pose immediate threats to human health and life.

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