~137Cs, ~226, 228Ra, ~210Pb and ~40K Concentrations in Antarctic Soil, Sediment and Selected Moss and Lichen Samples

摘要

During the summers of 1986, 1988 and 1992, soil, sediment, lichen and moss samples were collected near the Brazilian Antarctic station, Comandante Ferraz, King George Island, South Shetland Archipelago, and also in other South Shetland Islands. The content of ~137Cs and of natural radionuclides were Determined by gamma spectrometry. Highest ~137Cs levels were found in the Lichen and moss samples, with mean values of (15 ± 14) and (23 ± 14) Bq kg~-1_dry, respectively.