THE DISTRIBUTION OF U, TH AND RA-226 DERIVED FROM THE PHOSPHATE FERTILIZER INDUSTRIES ON AN ESTUARINE SYSTEM IN SOUTHWEST SPAIN

被引：68
作者：
MARTINEZAGUIRRE, A
GARCIALEON, M
IVANOVICH, M
机构：
[1] Facultad de Física, Universidad de Sevilla, 41080 Sevilla
[2] AEA Environment and Energy, Harwell Laboratory
来源：
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1994年 / 22卷 / 02期
关键词：
D O I：
10.1016/0265-931X(94)90020-5
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This paper reports an extensive study of the presence of natural radioactivity around a phosphate fertilizer factory complex situated in an estuarine area of southwest Spain. The study has concluded that the wastes from such industries are the cause of the enhancement of natural radioactivity in the immediate environment. Thus, significantly high levels of U- and Th-isotopes and Ra-226 are detected in water and sediment samples collected in this area. These conclusions based on the enhanced isotopic concentrations are further supported by the measured U, Th and Ra isotopic activity ratios being quite different from any observed elsewhere in undisturbed estuaries. These isotope activity ratios appear to be very sensitive indicators of waste disposal practices in such environments.
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页码：155 / 177
页数：23
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