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Carbon dioxide - Encyclopedia, History, Geography and Biography (4541 words) |
 | Carbon dioxide is a colorless gas which, when inhaled at high concentrations (a dangerous activity because of the associated asphyxiation risk), produces a sour taste in the mouth and a stinging sensation in the nose and throat. |
| Acute carbon dioxide toxicity is sometimes known as choke damp, an old mining industry term, and was the cause of death at Lake Nyos in Cameroon, where an upwelling of CO -laden lake water in 1986 covered a wide area in a blanket of the gas, killing nearly 2000. |
| The decreased binding to oxygen in the blood due to increased carbon dioxide levels is known as the Haldane Effect, and is important in the transport of carbon dioxide from the tissues to the lungs. |
| Carbon dioxide (4195 words) |
| Atmospheric carbon dioxide derives from multiple natural sources including volcanic outgassing, the combustion of organic matter, and the respiration processes of living aerobic organisms; man-made sources of carbon dioxide come mainly from the burning of various fossil fuels for heating, power generation and transport use. |
| Carbon dioxide may be obtained from air distillation, however this yields only relatively small quantities of CO A large variety of chemical reactions yield carbon dioxide, such as the reaction between most acids and most metal carbonates. |
| Carbon dioxide is an end product in organisms that obtain energy from breaking down sugars, fats and amino acids with oxygen as part of their metabolism, in a process known as cellular respiration. |
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