Air Quality - CO Revision

Revision sheet of things about Carbon Monoxide

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Martha Brown Air Quality Science 10sc1
Nicolle Bentley
Natasha Bentley
How Does Air Quality Affect Our Health?
Carbon Monoxide (CO)
Air quality affects people in many different ways. Different gases can have
harmful effects on people and can cause anything from asthma, hay fever to
blood poisoning!
Carbon Monoxide is one of the most harmful and potentially dangerous
gases for humans out there. It has a high level of toxicity and can affect many
of the different bodily functions. Carbon Monoxide is very serious cause of
illness and in the very worst cases, death. In the UK, about 50 people die each
year in their homes from accidental carbon monoxide poisoning.
Common sources of carbon monoxide in the home include faulty central
heating systems, gas appliances and fires. Blocked flues and chimneys mean
the gas can't escape and is inhaled by the unsuspecting individual. Car exhausts
are also a common source of carbon monoxide. A lethal level of carbon
monoxide in the blood can develop within ten minutes inside a closed garage.
Carbon monoxide is a product of incomplete combustion of natural or
petroleum gas. Inhaling the gas reduces the blood's ability to carry oxygen,
leaving the body's organs and cells starved of oxygen.

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Martha Brown Air Quality Science 10sc1
Nicolle Bentley
Natasha Bentley
Carbon monoxide is colorless, odorless and tasteless, but highly toxic.
It combines with hemoglobin (the iron, containing oxygen) to produce
carboxyhemoglobin, which cannot deliver oxygen around the body. This
condition is known as anoxemia.
Concentrations as low as 667 partsper million may cause up to 50% of
the body's hemoglobin to convert to carboxyhemoglobin. In the USA, the
Occupational Safety and Health Administration limits longterm workplace
exposure levels above 50 ppm.…read more


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