Trace elemental analysis of rice grown in two regions of Tanzania
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The concentrations of elements in rice, locally cultivated in two regions of Tanzania (Mbeya and Morogoro), were determined using Instrumental Neutron Activation Analysis (INAA) for Na, Mg, Al, Cl, K, Ca, V, Mn, Cu and Br, and Particle-Induced X-Ray Emission (PIXE) for P, Fe and Zn. There were no statistical differences in concentrations of the essential elements Fe, Zn, Cu and P in rice from both regions. There was also no significant correlation between grain P and Fe content, suggesting the possibility of growing Tanzanian rice with low phytic acid and high Fe contents.
KeywordsTrace element Rice INAA PIXE Phytic acid
This research project has been supported by the European Commission under the 6th Framework Programme through the Key Action “Strengthening the European Research Area, Research Infrastructures” (Contract no RII3-CT-2003-505925). The authors would also like to acknowledge the Ford Foundation and the International Programme in Physical Sciences of the University of Uppsala (IPPS) for financial assistance, and the staff of NPI Rez, Czech Republic and University of Surrey Ion Beam Centre for their technical advise and support.
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