Natural radioactivity of Zambian coal and coal ash |
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| Authors: | P Hayumbu M B Zaman S S Munsanje |
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| Institution: | (1) Nuclear Analytical Laboratory, Radioisotopes Research Unit, National Council for Scientific Research, P.O. Box 310158, Lusaka, Zambia |
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| Abstract: | 226Ra and232Th specific activities in coal from Maamba Collieries in Zambia have been measured at 46±8 and 56±9 Bq kg–1, respectively. These values are nearly two and a half times larger than the world average for coal and are close to those for lignite or brown coal. Determination of specific activities in coal waste at Maamba and coal ash at the fertilizer factory in Kafue showed enhancement factors of 2.6 and 2.0, respectively. These values are well within the world range of enhancement factors in coal ash. |
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