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THE MEASURMENT OF URANIUM CONCENTRATION IN DEFFERENT (13) TYPES OF NATURAL HERB. | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 52, Issue 4, 2011, Pages 470-474 | ||
| Author | ||
| Zainab K. Nasser Allah | ||
| Abstract | ||
| In this research the uranium concentrations in (13) different types of natural herb samples had been measured, and to limit the level of contamination with radio nuclides. The determination of uranium concentration in these samples has been done by using CR-39 track detector, the nuclear reaction used a source of nuclear fission fragments is 235U (n,f) obtained by the bombardment of 235U with thermal neutrons from (Am-Be) neutron source which has a flux of (5000 n cm-2 s-1). The results obtained show that the concentration of Uranium were calculated by comparison with standard samples, and varies from 0.235 ppm in (calum) type to 0.552 ppm in (Lazmender) type, all the results obtained are within the international levels as given by UNSCAR (United Nations Scientific Committee on the Effect of Atomic Radiation) data. | ||
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