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Carbon Monoxide (CO)

Data on pollutant emission inventories and air quality index reported at the ZMCM can be found on the local authority information web page:

  • Historical data for pollution at five specific parts of the city are available for ozone, carbon monoxide, sulphur dioxide, nitrogen dioxide and inhalated particles (PM10), pollution standard indexes (IMECA, Indice Metropolitano de Calidad del Aire), and lead concentration. 1996 data of polluted days above local standards.

  • Characteristics

    • It is a colorless, odorless gas. Oxidation to carbon dioxide occurs in the atmosphere, but very slowly.

    Main sources

    • Incomplete combustion of hydrocarbons and substances containing carbon.

    • Internal combustion engines burning fossil fuels, such as gasoline and diesel.

    • Natural sources such as fires.

    Main effects

    • Carboxihaemoglobin is formed by the combination of carbon monoxide and haemoglobin in the blood and prevents oxygen being carried. It affects the central nervous system, causing changes in pulmonary and cardiac functions, headache, fatigue, sleepiness, respiratory problems, even death. Specific effects of this pollutant on general human health have also been detected.



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