Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1877091 | Applied Radiation and Isotopes | 2008 | 6 Pages |
Abstract
A pseudo-cyclic instrumental neutron activation analysis (PCINAA) method has been developed to determine selected elements in various types of cereal and vegetable from Ghana using relatively short-lived nuclides (t1/2<80 s) and the Compton suppression counting. The samples were irradiated for 10 s at the Dalhousie University SLOWPOKE-2 research reactor facility (DUSR) and allowed to decay for 20 s, and counted for 40 s. The process is repeated every 50 s for 4 cycles to quantify Dy, Hf, Rb, Sc and Se through 165mDy, 179Hf, 86mRb, 46mSc, and 77mSe. The detection limits were generally of the order of 1.0 ng g−1 except for Rb which is about 1 μg g−1. Both precision and accuracy of the method were found to be good.
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Authors
B.J.B. Nyarko, E.H.K. Akaho, J.J. Fletcher, A. Chatt,