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The source adds the following information: "Notes: discharges into the aquatic environment of facilities subject to the annual declaration of pollutants in metropolitan France are recorded: industries, urban wastewater treatment plants, excluding discharges from basic nuclear installations; misreporting of urban wastewater treatment plant has been withdrawn "

The defines adsorbable organohalogen compounds (AOX) as organic chemicals that contain one or more carbon bonds chlorine (or bromine, fluorine, iodine). Organohalogenates are industrially manufactured and marketed in products as diverse as plant protection products, plastics, solvents, lubricants, refrigerants or propellants, pharmaceuticals, dielectrics in capacitors, additives in paints and coatings. inks, etc. Organochlorine compounds are also formed not from a voluntary manufacturing process but as by-products. The industrial sectors likely to be concerned are various and the substances in question sometimes poorly identified. These include the sectors of electrical cable recycling (when burning the PVC insulating coating) or pulp (chlorine bleaching).