Occurrence of an anthropogenic gadolinium anomaly in river and coastal waters of Southern France

被引:147
作者
Elbaz-Poulichet, F [1 ]
Seidel, JL [1 ]
Othoniel, C [1 ]
机构
[1] Univ Montpellier 2, CNRS, IRD, UMR 5569,ccSE, F-34095 Montpellier 5, France
关键词
rare earth elements; Gd anomaly sewage effluents; river; coastal zone;
D O I
10.1016/S0043-1354(01)00370-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study reports a pronounced positive Gd anomaly in a small river and in the largest French Mediterranean lagoon. Along the studied catchment, this anomaly is also present in the effluents of the municipal sewage treatment plants, suggesting an anthropogenic origin for the Gd excess. The anomaly corresponds to a distinct increase of Gd concentrations (up to 19 pmol/l) in the river and around 5.4 pmol/l in the lagoon. The excess flux of Gd is compatible with the medical use of water soluble Gd complexes as contrasting agent in magnetic resonance imaging. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1102 / 1105
页数:4
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