| radioactivity levels of staple foodstuffs and dose estimates for most of the tanzanian population. | levels of natural radioactivity in staple food products (maize and rice) from various localities of tanzania have been studied. the average activity concentrations of 40k, 232th and 238u in maize were 48.79 +/- 0.11, 4.08 +/- 0.01 and 13.23 +/- 0.10 bq kg(-1), respectively. in rice the concentrations of 40k, 232th and 238u were 24.67 +/- 0.03, 3.82 +/- 0.02 and 5.02 +/- 0.02 bq kg(-1), respectively. 137cs was detected in only one sample collected in zanzibar. the sample, with activity concentrat ... | 2007 | 18268378 |