X-ray fluorescence in IAEA Member States: Nigeria

Full text: The Centre for Energy Research and Training, Ahmadu Bello University, Zaria has got three EDXRF systems with isotopic sources (Fe-55, Cd-109, Am-241), secondary target and total reflection. These facilities are used for training, research and provision of analytical services. Training is provided for students of Chemistry, Geology, Physics, Chemical and Metallurgical Engineering at both Undergraduate and Postgraduate levels. The samples analysed consist essentially of geological, biological, water, and steel and alloy materials. Research activities are carried out in areas of mineral studies, environmental studies (air, water, biological and geological materials) and optimization of measurement protocols. Analytical services are provided for small-scale prospectors and miners of mineral ores (most importantly for Nb-Ta ores). With Cd-109 source the Nb-Ta ores are analyzed along with major constituents such as Mn, Fe, Ti and Zr and impurities and/or contaminants such as W, Pb, Th and U within an hour (including sample preparation and quantitative analysis). This is a competitive advantage as at present no other analytical facility offers this service with the same speed. The benefit is that it offers the miners the opportunity to classify their ores into either a Nb or Ta ore, it is important from the commercial point of view (different prices and help to take a proper decision). Other analytical services include the determination of trace elements in rock and sediment samples for the Nigerian Geological Survey, Nigerian Mining Corporation and Oil Companies. The XRF group has participated in different projects organized by the International Atomic Energy Agency (IAEA), Vienna such as Intercomparison survey of XRF Laboratories and Intercomparison analysis of marine sediment and biological samples. (author)