Major and trace element geochemistry of superficial sediments and suspended particulate matter of shallow saline lakes in Eastern Austria

被引：23

作者：

Stojanovic, Anja ^{[1
]}

Kogelnig, Daniel ^{[1
]}

Mitteregger, Barbara ^{[1
]}

Mader, Dieter ^{[2
]}

Jirsa, Franz ^{[1
]}

Krachler, Rudolf ^{[1
]}

Krachler, Regina ^{[1
]}

机构：

[1] Univ Vienna, Inst Inorgan Chem, UZAII, A-1090 Vienna, Austria

[2] Univ Vienna, Dept Lithospher Res, A-1090 Vienna, Austria

来源：

CHEMIE DER ERDE-GEOCHEMISTRY | 2009年 / 69卷 / 03期

关键词：

Saline lakes; Rare earth elements; Sediments; SPM; Anthropogenic impact; Austria; RARE-EARTH-ELEMENTS; COASTAL WATER-SYSTEMS; INORGANIC COMPLEXES; STABILITY-CONSTANTS; HEAVY-METALS; FRACTIONATION; YTTRIUM; DELTA; GADOLINIUM; SPECIATION;

D O I：

10.1016/j.chemer.2009.03.001

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：

General geochemical parameters of water, superficial sediments, and suspended particulate matter (SPM) were determined from small shallow saline lakes (soda ponds) as well as from lake Neusiedlersee in eastern Austria. Additionally, instrumental neutron activation analysis (INAA) was used to determine the distribution of major, rare earth and other trace elements in superficial sediments and SPM. Chemical results show remarkable differences in salinity and ionic strength between the investigated ponds. Anthropogenic effects, such as drawdown of ground water level and a loss of lake water due to drainage, are clearly reflected in obtained chemical and geological data. Due to a strong dependence of the complexation and scavenging behavior of the rare earth elements (REE) on ionic strength, a significant difference between REE concentrations in soda ponds with different anthropogenic impact was found. The content and composition of authigenic evaporitic minerals in Superficial sediments and SPM clearly differ with a fluctuating water level and salt concentration. Furthermore, we determined the distribution of major and trace elements in superficial sediments of a nearby fluvial system. Our results show a clear correlation between REE superficial sediment concentrations in anthropogenically degraded soda ponds and fluvial system. Therefore, we assume that REE concentrations of sediments and SPM are suitable for the study of geochemical changes of inland saline takes due to anthropogenic impacts on water balance. (C) 2009 Elsevier GmbH. All rights reserved.

引用

页码：223 / 234

页数：12

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