Fluorides in Surface and Underground Waters of Southeastern Coast and in Parts of Navigable Channels of Azov Sea

摘要

The concentration of fluorides in the surface and underground waters of the studied areas of the Azov sea does not exceed the maximum permissible concentrations. In the direction of the Eastern region of the Taganrog Bay → Central area →West Bay area → East Azov Sea, the concentration of fluorides in the water of the coastal zone increases. In the same direction, their concentration in underground aquifers increases. It is shown that the tributaries may he one of the main sources of fluoride inflow into the coastal zone of the sea, while the role of groundwater is secondary. In the areas of dredging and dumping soil, a slight excess of fluoride concentrations was revealed, compared with their concentrations in the water of the background sites, which may indicate the local influence of the functioning of navigable channels on the formation of the concentration of fluorides in the sea water.