Radiological and pollution risk assessments of terrestrial radionuclides and heavy metals in a mineralized zone of the siwalik region (India).

The present study reveals the distribution of terrestrial radionuclides (Ra, Th and K) and heavy metals (Cr, Ni, Cu, Zn, Pb, Co) from soil samples of Una, Hamirpur and Kangra districts of Himachal Pradesh (India). The Ra, Th, K activity concentration in the studied region has been varied from 8 to 3593 Bq kg; 21-370 Bq kg16; 62-7130 Bq kg respectively. High disequilibrium factor (U/Ra) depicts that uranium constantly migrates from clay oxidizing zone and getting precipitated with enrichment towards south.