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Catchment Soil Properties Affect Metal(loid) Enrichment in Reservoir Sediments of German Low Mountain Regions

Hahn, Jens ; Bui, Thanh ; Kessler, Mathias ; Weber, Collin J. ; Beier, Thomas ; Mildenberger, Antje ; Traub, Martina ; Opp, Christian (2022)
Catchment Soil Properties Affect Metal(loid) Enrichment in Reservoir Sediments of German Low Mountain Regions.
In: Applied Sciences, 12 (5)
doi: 10.26083/tuprints-00022526
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Item Type: Article
Type of entry: Secondary publication
Title: Catchment Soil Properties Affect Metal(loid) Enrichment in Reservoir Sediments of German Low Mountain Regions
Language: English
Date: 2022
Place of Publication: Darmstadt
Publisher: MDPI
Journal or Publication Title: Applied Sciences
Volume of the journal: 12
Issue Number: 5
Collation: 15 Seiten
DOI: 10.26083/tuprints-00022526
Corresponding Links:
Origin: Secondary publication service
Abstract:

Sediment management is a fundamental part of reservoir operation, but it is often complicated by metal(loid) enrichment in sediments. Knowledge concerning the sources of potential contaminants is therefore of important significance. To address this issue, the concentrations and the mobile fractions of metal(loid)s were determined in the sediments and the respective catchment areas of six reservoirs. The results indicate that reservoirs generally have a high potential for contaminated sediment accumulation due to preferential deposition of fine particles. The median values of the element-specific enrichment factor (EF) demonstrates slight enrichments of arsenic (EF: 3.4), chromium (EF: 2.8), and vanadium (EF: 2.9) for reservoir sediments. The enrichments of cadmium (EF: 8.2), manganese (EF: 3.9), nickel (EF: 4.8), and zinc (EF: 5.0) are significantly higher. This is enabled by a diffuse element release from the soils into the impounded streams, which is particularly favored by soil acidity. Leaching from the catchment soils partially enriches elements in stream sediments before their fine-grained portions in particular are deposited as reservoir sediment. We assume that this effect is of high relevance especially for reservoirs impounding small streams with forested catchments and weakly acid buffering parent material of soil formation.

Uncontrolled Keywords: reservoir, soil, catchment, sediment, metals, trace elements, enrichment, element mobility
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-225260
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Department of Soil Mineralogy and Soil Chemistry
Date Deposited: 10 Nov 2022 13:09
Last Modified: 26 Apr 2023 08:44
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22526
PPN: 507248902
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