Fluorine in the Barents Sea waters

First data on the fluorine content in the Barents Sea waters were obtained. According to the results of direct potentiometric measurements, the fluorine concentration is in the range of 1,14–1,29 mg/kg, increasing with growing chlorinity (salinity). The average F/Cl mass ratio is equal to (6,58 ± 0,02)  10−5 for surface desalinated layer with chlorinity 19‰ and to (6,63 ± 0,04)  10−5 for the main water column with chlorinity >19‰. The value of the F/Cl ratio in the Barents Sea waters closely corresponds to that of the World Ocean, including the North Atlantic.