PHYS143 Lecture Notes - Lecture 8: Global Warming, Non-Road Engine, State Implementation Plan
5 Dec 2017
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Reason : incomplete combustion of carbon due to insufficient oxygen. With abundant oxygen, combustion produces co2 which is not as toxic. Gasoline powered vehicles contribute about 50% of the carbon monoxide. Toxicity is due to formation of compound with hemoglobin called. The hemoglobin then becomes unavailable to carry oxygen to various carboxyhemoglobin parts of the body causing slow suffocation. In la there are over 3 million cars. Total co emitted per day is 8000 tons. Co levels vary from few ppm to 100 ppm. In cities like la, denver, cincinnati, detroit, these limits are exceeded. Good insulation in houses means dangerous levels of co in houses. (co. Internal sources are: house furnace, gas water heater, gas stoves, etc. The maximum permissible indoor concentration for continuous exposure for healthy bodies is 50 ppb. Inexpensive co detectors are available, and houses with basements where most of the heating appliances are, should have at least one in the basement.
