Country 226Ra (Bqkg-1) 232Th (Bqkg-1) 40K (Bqkg-1) Reference Nigeria (Oke-Ogun) - - 39.6 Present Study Saudi Arabia 9.64 6.77 74.51 Zain, 2013 India 2.50 1.02 34.35 Shanthi et al., 2010 Egypt (Alexandra) 0.44 - 47.25 Ibrahim et al., 2007 Iran/France 0.05 0.14 434 Hossein et al., 2006

Table 3: Comparison of the average concentrations of 226Ra, 232Th and 40K with those published data in powdered milk (Bqkg-1.).