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Coloured rain dust from Sahara Desert is still radioactive
C Papastefanou1, M Manolopoulou, S Stoulos
1Atomic and Nuclear Physics Laboratory, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece. papastefanou@physics.auth.gr
Journal of Environmental Radioactivity
|May 31, 2001
Abstract:
A coloured rain event originating from the Sahara Desert occurred on April 9, 2000 at Thessaloniki, Northern Greece (40 degrees 38'N, 22 degrees 58'E). The radioactive nuclides that were determined in a coloured rain dust sample were 137Cs of Chernobyl origin, 7Be of cosmogenic origin and 40K of terrestrial origin. Cesium-137 still remained 14 years after the Chernobyl accident, reaching 26.6 Bq kg-1 in the coloured rain dust.