TBiogeochemistry of fluor trace element in tne Transcarpathian region of Ukraine

Abstract

Objective. We studied a content of fluor trace element in soil-foodstuffs-human chain for the revealing of the localities and the contingents of people with a deficit or a toxic concentration of this element. Materials and methods. We studied the soil samples taken from the lands of Transcarpathian region of all 13 administrative regions. Samples of vegetable mixture for study were taken in the local farms. We performed the analysis of water supply sources on the content of fluor of all regions of the region. Results. Ultra low fluor concentration was determined in the environmental objects (soil, drinking water) and in food intakes of the residents of the Transcarpathian region. Recommended and minimum allowable values (according to the physiological standards) of the consumption of fluor with a daily sets of the foodstuffs were calculated, taking into account a variability of factual nutrition, and for the representative prognostication of the population's provision of fluor. Conclusions. Environmental objects of the Transcarpathian oblast show the ultralow content of the fluor trace element, it causes a hypofluorosis of the biosphere on the studied territory. We noted a fluor deficit in the organisms of the local residents because a content of fluor in the organism depended on the level of the intake and closely connected with the dissemination of the element in the biosphere of the region. We determined that index of the caries prevalence in the local residents made up 80-90%; CFE index (caries+ filling +extraction) made up 4.5-5.0 at average index in Ukraine of 2.75.