Radionuclide Concentrations in Salt Pans in the Coastal Area of Cox's Bazar, Bangladesh

摘要

Radionuclide concentrations of ~226Ra, ~232Th, ~137Cs, ~134Cs and ~40K in samples of water, soil and salt from three gradients of salt pans (reservoir, condenser and crystalliser) in the coastal area of Cox's Bazar, Bangladesh and in samples of refined salts were measured using γ-spectrometry. The activities of ~226Ra in the salt pans were found to be in the range 3.18 ± 1.02 Bq l~-1 in water to 25.17 ± 5./76 bq kg~-1 in soil; ~232 Th activities were 2.01 ± 0.89 Bq l~-1 in water to 42.33 ± .54 Bq kg~-1 in soil, and ~40K activities ranged from 1.09.60 ± 27.77 Bq l~-1 in water to 651.89 ± 65.89 Bq kg~-1 in soil. No ~137Cs or ~134Cs was found in soil, salt and water form the salt pans investigated.