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The application of phosphogypsum in agriculture and the radiological impact

Papastefanou, C., Stoulos, S., Ioannidou, A., Manolopoulou, M.·2006·Journal of Environmental Radioactivity
DOI 10.1016/j.jenvrad.2006.05.005
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Abstract

Radium-226 in phosphogypsum produced in a phosphate industry, SICNG operating at Thessaloniki, Northern Greece since May 1966, varied from 261 to 688 Bq kg(-1) (mean value 508 Bq kg(-1)). This radionuclide in soil tilled with phosphogypsum used for agricultural purposes varied from 50 to 479 Bq kg(-1) (average 205 Bq kg(-1)), while in the regular soil of cultivated fields it varied from 37 to 54 Bq kg(-1) (average 48 Bq kg(-1)). Radium-226 in rice originated from cultivated fields tilled with phosphogypsum or not varied from 0.36 to 1.98 Bq kg(-1) (average 1.53 Bq kg(-1)) with the higher values observed in samples originated from cultivated fields tilled with phosphogypsum. Radium-226 transfer factors, TF, from soil tilled with phosphogypsum to plants for the case of rice varied from 6.5 x 10(-3) to 2.0 x 10(-2) (geometric mean: 1.1 x 10(-2)). A mean (226)Ra content in rice 1.53 Bq kg(-1) results in a daily intake of (226)Ra by humans in Greece 0.0084 Bq day(-1) leading to an annual effective dose for adults 0.86 microSv y(-1) which is much less in contributing to the average exposure to natural radiation sources (2.4 mSv y(-1)) and particularly to the part due to ingestion (0.29 mSv y(-1)). It is necessary to continuously control (monitoring) (226)Ra in phosphogypsum before any use for agricultural purposes.

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Research works printed but not linked: 23

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Metadata

Authors
Papastefanou, C., Stoulos, S., Ioannidou, A., & Manolopoulou, M.
Venue
Journal of Environmental Radioactivity
Publisher
Elsevier BV
Published
2006-01
Volume
89
Issue
2
Pages
188-198
ISSN
0265-931X
DOI
10.1016/j.jenvrad.2006.05.005
Cited by
196
References
0
Language
en
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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