Natural radionuclides in water and sediments of the São Francisco River in Petrolina, Brazil
by Cleomacio Miguel Da Silva; Crescêncio Andrade Da Silva Filho
International Journal of Low Radiation (IJLR), Vol. 11, No. 2, 2019

Abstract: This study seeks to determine the concentrations of 238U, 232Th and 40K in water and sediments of the São Francisco River in Petrolina. For this purpose, high resolution gamma ray spectrometry with hyperpure germanium was performed. The levels of 238U, 232Th and 40K in the water samples were all under the detection limit. The concentrations of 238U, 232Th and 40K in the sediments varied from 5 to 76 Bq kg−1, from 11 to 521 Bq kg−1, and from 80 to 542 Bq kg−1, respectively. The results indicated an increase of availability of these radionuclides through the trophic chain in the São Francisco River.

Online publication date: Fri, 25-Oct-2019

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