[Environmental pollution studies of fluorine coming from industry].
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Fluorine in optimal concentration prevents dental caries, while an excess or deficiency in it may lead to pathologic alterations which make fluorine be one of the environmental pollutants the concentration of which is limited by health standards. This investigation, carried out in the area of an aluminium plant, showed the presence in excess of fluorine and fluorine-containing dusts in the atmospheric air, determining an increased fluorine content in the ground and vegetal cultures of the respective area. Negative effects of these noxae upon vegetation and animals were noticed.