Biomonitoring is conducted primarily in urban areas near electric arc steel mills. These facilities represent potential sources of emissions of organic and metal compounds that are then transported by air to urbanized areas. Metal compounds emitted by steel mills are fixed by dust particles. Solid, liquid or gaseous organic compounds may also adsorb or be absorbed by these particles. The organic pollutants studied in a biomonitoring network are dioxins/furans (PCDD/PCDF), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). As an accessory, to complete the observations and to establish correlations with the other pollutants, the accumulation of heavy metals cadmium, chromium, mercury, lead, vanadium and zinc is also analysed. Translated with www.DeepL.com/Translator