Rare Earth Elements as hydrological tracers of anthropogenic and critical zone contributions: a case study at the Alzette River basin scale.

被引：30

作者：

Hissler, Christophe ^{[1
]}

Stille, Peter ^{[2
]}

Guignard, Cedric ^{[1
]}

Iffly, Jean Francois ^{[1
]}

Pfister, Laurent ^{[1
]}

机构：

[1] GEOSAT EVA CRP GL, 41 Rue Brill, L-4422 Belvaux, Luxembourg

[2] CNRS, LHyGeS, UMR 7517, F-67084 Strasbourg, France

来源：

GEOCHEMISTRY OF THE EARTH'S SURFACE GES-10 | 2014年 / 10卷

关键词：

rare earth elements; gadolinium anomaly; hydrological tracer; anthropogenic contribution; basin scale; flood event scale; GADOLINIUM; WATERS; CATCHMENT; RHINE;

D O I：

10.1016/j.proeps.2014.08.036

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Enrichments in Gd and LREE/HREE fractionation have been observed for the dissolved and colloidal fractions in waters of the Alzette River during low flow conditions. They can be related to the effluents of the waste water treatment plants (Gd/Gd*:8-380 and La-N/Yb-N: 0.02-0.07). Mean daily flux balance calculations at the basin scale show that during low flow conditions Gd only comes from the anthropogenic effluents. When flood events occur, the Gd anomaly progressively disappears and gives way to a chemical water signature, which is closer to that of natural REE sources in the basin ( Gd/Gd*<1.4 and 0.11<La-N/Yb-N<1.5). (C) 2014 The Authors. Published by Elsevier B.V.

引用

页码：349 / 352

页数：4

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