The Mrs.
After cooking on our new gas stove last night for approximately 30-45 minutes, my husband said that the carbon monoxide detector in our bedroom read a level of 15ppm. This is the highest we have seen it, generally speaking it doesn't go over 10ppm. At what point (in ppm) should we be concerned?
Answer
Any level of carbon monoxide is dangerous, it inhibits hemoglobin, myoglobin, and mitochondrial cytochrome oxidase (which are all VERY important!).
But typically, a concentration of as little as 0.04% (400 parts per million) carbon monoxide in the air can be fatal.
Below is a chart to help elaborate on the toxicity levels of CO and its symptoms:
* 35 ppm (0.0035%) Headache and dizziness within six to eight hours of constant exposure
* 100 ppm (0.01%) Slight headache in two to three hours
* 200 ppm (0.02%) Slight headache within two to three hours
* 400 ppm (0.04%) Frontal headache within one to two hours
* 800 ppm (0.08%) Dizziness, nausea, and convulsions within 45 minutes. Insensible within two hours.
* 1,600 ppm (0.16%) Headache, dizziness, and nausea within 20 minutes. Death in less than two hours.
* 3,200 ppm (0.32%) Headache, dizziness and nausea in five to ten minutes. Death within 30 minutes.
* 6,400 ppm (0.64%) Headache and dizziness in one to two minutes. Death in less than 20 minutes.
* 12,800 ppm (1.28%) Unconsciousness after 2-3 breaths. Death in less than three minutes.
In addition, a recent report concludes that carbon monoxide exposure can lead to significant loss of lifespan after exposure due to damage to the heart muscle.
Any level of carbon monoxide is dangerous, it inhibits hemoglobin, myoglobin, and mitochondrial cytochrome oxidase (which are all VERY important!).
But typically, a concentration of as little as 0.04% (400 parts per million) carbon monoxide in the air can be fatal.
Below is a chart to help elaborate on the toxicity levels of CO and its symptoms:
* 35 ppm (0.0035%) Headache and dizziness within six to eight hours of constant exposure
* 100 ppm (0.01%) Slight headache in two to three hours
* 200 ppm (0.02%) Slight headache within two to three hours
* 400 ppm (0.04%) Frontal headache within one to two hours
* 800 ppm (0.08%) Dizziness, nausea, and convulsions within 45 minutes. Insensible within two hours.
* 1,600 ppm (0.16%) Headache, dizziness, and nausea within 20 minutes. Death in less than two hours.
* 3,200 ppm (0.32%) Headache, dizziness and nausea in five to ten minutes. Death within 30 minutes.
* 6,400 ppm (0.64%) Headache and dizziness in one to two minutes. Death in less than 20 minutes.
* 12,800 ppm (1.28%) Unconsciousness after 2-3 breaths. Death in less than three minutes.
In addition, a recent report concludes that carbon monoxide exposure can lead to significant loss of lifespan after exposure due to damage to the heart muscle.
Carbon monoxide alarm went off?
Chris Marm
I have 2 carbon monoxide detectors. one behind my dryer and one upstairs by the bedrooms. one was beeping every 30 seconds which i believe means that there is a problem with the device, however i moved the one from upstairs into the spot where the alarming one was and when i press the test button a reading of 210 ppm comes up? what should i do?
Answer
http://en.wikipedia.org/wiki/Carbon_monoxide_poisoning
Readings above 100 ppm are dangerous.
I would turn down the heat (preferably off, if not too cold) and leave the house, and have a professional test it.
Assuming this is a standalone house, I assume that you have a gas furnace or water heater malfunctioning in your home.
I had first wondered if you had a malfunctioning unit - I had one once - but having your other monitor show that reading makes me want you to be safe.
http://en.wikipedia.org/wiki/Carbon_monoxide_poisoning
Readings above 100 ppm are dangerous.
I would turn down the heat (preferably off, if not too cold) and leave the house, and have a professional test it.
Assuming this is a standalone house, I assume that you have a gas furnace or water heater malfunctioning in your home.
I had first wondered if you had a malfunctioning unit - I had one once - but having your other monitor show that reading makes me want you to be safe.
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