Determination of trace elements in food by neutron activation analysis |
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Authors: | A Chatt H S Dang B B Fong C K Jayawickreme L S McDowell D L Pegg |
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Institution: | (1) Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, B3H 4J1 Halifax, Nova Scotia, (Canada) |
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Abstract: | Neutron activation analysis (NAA) methods have been developed for the determination of major, minor and trace elements in duplicate diets and individual food items. These include a cyclic instrumental NAA (CINAA) method for measuring Se content through its short-lived nuclide77mSe; epithermal INAA (EINAA) for I and As; conventional INAA for Br, Ca, Cl, Co, Cr, Fe, K, Mg, Mn, Na, Rb, Sb, Sc, Sn and Zn; combination of EINAA and INAA for Al; radiochemical NAA (RNAA) for As, Au, Co, Cu, Fe, Hg, Mo, Sb, Se and Zn; and preconcentration NAA (PNAA) for U and Th. Accuracy of measurements have been evaluated by analyzing a number of biological and diet reference materials. Multielement concentrations of diets and foods have been measured by these methods. |
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