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Table 1 Description of industrial air pollution, by pollutant and associated industrial activity (2001).

From: Description of industrial pollution in Spain

AIR POLLUTANTS MAIN ASSOCIATED ACTIVITY1 ACTIVITY GROUP
GROUP 1: ENVIRONMENTAL THEMES
Methane Landfills (solid waste disposal on land). Installations for the disposal of non-hazardous waste (>50 Mt/day) and landfills (>10 Mt/day) Waste management
Carbon monoxide; Perfluorocarbons Primary and secondary metal production (ferrous and non-ferrous) or sinter plants (metal industry and metal ore roasting or sintering installations) Production and processing of metals
Carbon dioxide; Sulphur dioxide; Nitrogen dioxide Combustion installations >300 MW Energy industries
Hydrofluorocarbons Manufacture of basic organic chemicals Chemical industry and chemical installations
Nitrous oxide Manufacture of basic inorganic chemicals and fertilizers Chemical industry and chemical installations
Ammonia Manure management. Installations for poultry (>40000), pigs (>2000) or sows (>750) Other activities
Non-methane volatile organic compounds Petroleum product processing (mineral oil and gas refineries) Energy industries
GROUP 2: METALS AND COMPOUNDS
Arsenic; Cadmium; Nickel Combustion installations >300 MW Energy industries
Chromium; Copper; Lead; Zinc Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations) Production and processing of metals
Mercury Manufacture of basic inorganic chemicals and fertilizers Chemical industry and chemical installations
GROUP 3: CHLORINATED ORGANIC SUBSTANCES
Dichloroethane-1,2; Tetrachloromethane Manufacture of basic organic chemicals Chemical industry and chemical installations
Dichloromethane; Trichloromethane Manufacture of pharmaceutical products (solvent use) Chemical industry and chemical installations
Hexachlorobenzene; Tetrachloroethylene Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations) Production and processing of metals
Dioxins and furans Combustion installations >300 MW Energy industries
Trichloroethylene Paint application (solvent use). Installations for surface treatment or products using organic solvents (>200 Mt/year) Other activities
GROUP 4: OTHER ORGANIC COMPOUNDS
Benzene; Polycyclic aromatic hydrocarbons Petroleum product processing (mineral oil and gas refineries) Energy industries
GROUP 5: OTHER COMPOUNDS
Chlorine and inorganic compounds; Fluorine and inorganic compounds; PM10 Combustion installations >300 MW Energy industries
Hydrogen cyanide Characteristic processes in the manufacture of metals (ferrous and non-ferrous) and metal product (metal industry and metal ore roasting or sintering installations) Production and processing of metals
  1. 1 Industrial activity that generates the highest emissions for each pollutant.