Investigation on soil contamination at recently inundated and non-inundated sites

Wölz, Jan; Schulze, Tobias; Varel, Urte Lübcke-von; Fleig, Michael; Reifferscheid, Georg; Brack, Werner; Kühlers, Dirk; Braunbeck, Thomas; Hollert, Henner

doi:10.1007/s11368-010-0267-6

Cited by 30 publications

(14 citation statements)

References 41 publications

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“…The dioxin-like effectiveness (bio-TEQs) of the sediment samples from the Karlskopf was high compared with other studies in different central European river systems, as assessed by the fuzzy logic classification system of Keiter et al (2009). Higher bio-TEQs were detected only in samples from Sigmaringen (Danube 2) and in one sample of inundated foreland of the Rhine (Rhine 3) (Wölz et al 2011) (see Fig. 6).…”

Section: Comparative Toxicity Evaluation and Longitudinal Gradientmentioning

confidence: 64%

“…Several studies were able to show a link of soil contamination in retention areas and extreme flood events Umlauf et al 2005;Wölz et al 2011). Wölz et al (2011) reported on the biological effects (EROD assay) in soils of the inundated foreland and the non-inundated hinterland of the Rhine. We anticipate that also in the present study, soil environments are exposed to river-borne contaminants arising from flood events.…”

Section: Comparative Toxicity Evaluation and Longitudinal Gradientmentioning

confidence: 99%

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Sediment toxicity in a connected oxbow lake of the Upper Rhine (Germany): EROD induction in fish cells

et al. 2011

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Purpose Although the water quality of the Rhine River in Europe has improved, contaminated sediments may still threaten fish populations. This is particularly likely in Upper Rhine oxbow lakes, which are connected to the main river channel only at one end, except for extreme flood events. The impact of such extreme flood events on the sediment toxicity has, however, not yet been investigated, although numerous oxbow lakes exist with varying degrees of connection to their main river channels. Materials and methods We evaluated contaminants in sediments taken at ten sites along a 600-m transect in an oxbow lake in a nature reserve that receives sediment contamination only from the main river. Sediment was analysed for polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs) as well as dioxins (PCDDs) and furans. The dioxin-like activity was measured using in vitro bioassays (7-ethoxyresorufin-O-deethylase (EROD) assay) on RTL-W1 cells. The distribution of sediment contaminants and effects in bioassay were compared within the oxbow lake and with other European water systems. Results and discussion Chemical analysis of the 16 priority PA Hs (1.12-2.16 mg kg − 1 ), ∑PCDD/Fs (1.62-4.17 μg kg −1 ) and ∑PCB congeners 77, 81, 105, 118, 126, 156 and 169 (2.3-3.1 μg kg −1 ) showed low to moderate sediment contamination. However, all sediment samples showed dioxin-like activities with bio-TEQ values between 3.62 and 7.92 ng g −1 in an EROD induction assay using RTL-W1 cells. These values were higher than those reported for other, larger river systems. Both contaminant levels and toxicity data clearly suggest a spatially homogenous exposure profile throughout the oxbow lake. This homogenous profile was caused most likely by extreme floods, which lead to a large input of river sediments and a mixture with remobilised lake sediments. Conclusions This study illustrates the relevance of flood event-related contaminant input from the main river channel for connected oxbow lakes. This may impair their function as reproductive and developmental fish habitats. As the probability and temporal pattern of flood events in river systems may change due to climate change, this may also have direct consequences for the sediment contamination in connected oxbow lakes, and thus affect their ecological function for fish.

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Section: Comparative Toxicity Evaluation and Longitudinal Gradientmentioning

confidence: 64%

Section: Comparative Toxicity Evaluation and Longitudinal Gradientmentioning

confidence: 99%

Sediment toxicity in a connected oxbow lake of the Upper Rhine (Germany): EROD induction in fish cells

et al. 2011

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“…Due to the highly conserved structure of the genetic material, it is possible to use a wide variety of species in genotoxicity tests; currently, the most widespread methods for the routine tests are based on the use of indicator bacteria and also basidiomycetes fungi, plants, insects and cultured mammalian cells or even laboratory animals for mutagenicity tests. According to the literature, the Ames test is the most widely used in genotoxicity evaluations of soils and leachate (Claxton et al, 2010;Wölz et al, 2011). This test, also known as Salmonella/microsome, consists, basically, in the employment of strains of the auxotrophic bacteria Salmonella typhimurium, i.e., deficient in the synthesis of the aminoacid histidine; the strains of these cells are unable to grow in minimum medium, where the mutagenic compounds are able to restore the synthesis capacity of this aminoacid, thus, the mutagenic expression corresponds to the growth of the colony in a minimum culture medium and it can be easily detected by counting the colonies (Umbuzeiro & Vargas, 2003).…”

Section: Genotoxicity Biomarkersmentioning

confidence: 99%

Bioindicators and Biomarkers in the Assessment of Soil Toxicity

Fontanetti¹,

Nogarol²,

Souza³

et al. 2011

Soil Contamination

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“…The spiked sediment of experiment 3 had a moderate mean bio-TEQ value (855 pg g −1 SEQ) and EROD-inducing potential compared to findings of Wölz et al (2008Wölz et al ( , 2011, who determined a bio-TEQ value of 1,900 pg g −1 for River Elbe sediments and bio-TEQ values between 1,160 and 6,640 pg g −1 in suspended particulate matter samples from the River Rhine. Hollert et al (2002) reported an EROD induction potential of 1,767 pg g −1 for sediments from a small creek (Forellenbach) in BadenWürttemberg, Germany, which is heavily contaminated with PAHs.…”

Section: Erod Induction Potentialmentioning

confidence: 62%

A combined hydraulic and toxicological approach to assess re-suspended sediments during simulated flood events—part II: an interdisciplinary experimental methodology

et al. 2012

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Investigation on soil contamination at recently inundated and non-inundated sites

Cited by 30 publications

References 41 publications

Sediment toxicity in a connected oxbow lake of the Upper Rhine (Germany): EROD induction in fish cells

Sediment toxicity in a connected oxbow lake of the Upper Rhine (Germany): EROD induction in fish cells

Bioindicators and Biomarkers in the Assessment of Soil Toxicity

A combined hydraulic and toxicological approach to assess re-suspended sediments during simulated flood events—part II: an interdisciplinary experimental methodology

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