The carbon monoxide

The carbon monoxide a deadly poison, which binds to the hemoglobin in blood is significantly stronger than the life-giving oxygen. It is a colorless, poisonous gas (under normal conditions), odorless and tasteless. The chemical formula CO. Death occurs already when carbon monoxide binds to hemoglobin of 80%. The carbon monoxide contained (12%) in vehicle exhaust gases.

The carbon monoxide is a deadly poison, which binds to the hemoglobin in blood is significantly stronger than the life-giving oxygen

The main types of chemical reactions in which carbon monoxide is involved are addition reactions and redox reactions in which it exhibits reducing properties.

At room temperature, the carbon monoxide weakly active. Its chemical activity increases considerably when heated in solution. Thus, in solutions it restores Au salt, Pt, Pd, and other metals to already at room temperature. When heated, restores and other metals, such as CO + CuO = Cu + CO2. It is widely used in pyrometallurgy. The reaction of CO with palladium chloride underlies qualitative detection of carbon monoxide.

The interesting thing is that there are bacteria that can due to the oxidation of CO to get them the necessary life energy.

As noted above, carbon monoxide is very dangerous. Symptoms of poisoning: headache, dizziness; marked tinnitus, shortness of breath, palpitations, flickering before the eyes, redness of the face, weakness, nausea and sometimes vomiting; in severe cases, convulsions, loss of consciousness, coma.

There were cases when some imprudent drivers in winter spend the night in the car, who was standing in the garage, the doors of which were closed. To be warm to sleep, they start the engine, and he worked at idle. Typically, carbon monoxide accumulated in the garage, and such careless people died. Rightly noted the author of one book, "start the engine in a small garage with the closed door suicide".

Toxic effects caused by the formation of carboxyhemoglobin CO carbonyl significantly stronger complex with hemoglobin, compared to the complex of hemoglobin with oxygen. Thus blocked oxygen transport processes and cellular respiration. The concentration in air of more than 0,1% leads to death within one hour.

The compound of carbon monoxide to hemoglobin is reversible. The victim should be brought into the fresh air.

There are natural and anthropogenic sources of income in the atmosphere of carbon monoxide. Receipt of CO from natural and anthropogenic sources is equal. In vivo, at the Earth's surface, the carbon monoxide formed during incomplete anaerobic decomposition of organic compounds, and biomass combustion, mainly in the forest and steppe fires.

The main anthropogenic source of CO are currently serving the exhaust gases of internal combustion engines.