Carbon Monoxide Signature in Human Body: Measured Data and GIS Physiology

Carbon monoxide is colorless, odorless and non-irritating gas that is produced via incomplete combustion. It can be produced from both natural and man-made sources. A few of the most important sources include exhaust from automobiles, inadequately adjusted appliances, furnaces, and fireplaces. Carbon monoxide released into the atmosphere converts to carbon dioxide. However, this can take up to two months [1]. Carbon monoxide is known to enter human body rapidly and to spread into the blood, brain, heart and muscles. Lungs eliminate this carbon monoxide during breathing. However, there is delay and it can take almost 24 hours to leave the human body [1]. It was reported that exposure to 10–1950 ppm of CO could result in a 2–80% carboxy-hemoglobin (COhb) in blood [2]. It was reported that 5–10% COhb could result in decreased visual functioning, reduced task performance and difficulty in maintaining alertness [2].