Speciation of radium-226 in podzols of northeastern Sakhalin in the

摘要

Podzols in oil-mining areas of northeastern Sakhalin were examined. The physicochemical properties of the podzols on the industrial plot, on the adjacent territory, and in the background landscapes were characterized. It was found that the distribution of the particular forms of radium-226 in the podzols contaminated with slightly saline and slightly radioactive stratal water differs from that in the background soils. In the contaminated podzols, the portion of exchangeable radium-226 increases in the lower part of the profile; the accumulation of mobile water-soluble and acid-soluble radionuclid increases in the illuvial horizons and decreases in the upper organic horizons