¹³⁷Cs contamination in tea and yerba mate in South America

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• 作者：Di Gregorio ; D.E. ; Huck ; H. ; Aristegui ; R. ; De Lazzari ; G. ; Jech ; A.
• 关键词：¹³⁷Cs ; Contamination ; Tea ; Yerba mate ; Soil ; Fertilizer ; Chernobyl
• 刊名：Journal of Environmental Radioactivity
• 出版年：2004
• 期刊代码：45_0265931x
• 类别：env
• 出版时间：2004
• 卷：76
• 期：3
• 页码：273-281
• 文件大小：144 K

摘要

Gamma-ray spectra from more than 50 samples of food products available in stores of Buenos Aires city were measured using a germanium detector. Activity concentrations of ¹³⁷Cs up to 10 Bq/kg were found in tea and yerba mate manufactured in Apóstoles, Argentina. Further measurements of tea leaves, yerba mate leaves and soils, all coming from a cultivated area in that region, also show the presence of ¹³⁷Cs contamination. The results suggest that the area was fertilized with a product that originated in a region affected by the fallout from the Chernobyl nuclear plant accident.