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The concentration of 238 U, 232 Th, 230 Th, 226 Ra, 228 Ra and 210 Pb were determined in samples of Peperomia pellucida and in the surrounding soil, by alpha spectrometry and gross alpha and beta counting. The radionuclide activity concentrations ranged from 4.3 to 38 Bq kg −1 , 1.7–124 Bq kg −1 , 2.1–38 Bq kg −1 , 8.5–37 Bq kg...
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