TY JOUR TI Water Content and Pb Concentrations in the Bottom Sediments Of The Gdansk Deep (South-Eastern Baltic Sea) According to the Portable X-Ray Fluorescence Analyzer Olympus Vanta C KW sediment cores KW Spectroscan-Maks-G KW coherent and incoherent scattering KW anthropogenic source of lead input JO Russian Journal of Earth Sciences AU Laskina, D.N. AU Dorokhova, E.V. AU Koroleva, Y.V. PY 2024 IS 24 PB Geophysical Center of the Russian Academy of Sciences