Assessment of sediment ecotoxicological status as a complementary tool for the evaluation of surface water quality: the Ebro river basin case study

Roig, Neus; Sierra, Jordi; Nadal, Martí; Moreno-Garrido, Ignácio; Nieto, Elena; Hampel, Miriam; Gallego, Elena Pérez; Schuhmacher, Marta; Blasco, Julián

doi:10.1016/j.scitotenv.2014.06.125

Cited by 52 publications

(62 citation statements)

References 31 publications

(65 reference statements)

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“…near the values of the metals in the reservoirs; the same is true comparing with those of the Choapa river basin except for Mn, which showed considerably higher values. This might be explained by the presence of high concentrations of manganese carbonate, which is solubilized when the pH is decreased for sample preservation [46][47][48] .…”

Section: Heavy Metal Determination In Watermentioning

confidence: 99%

“…Water-soluble phosphorous in sediment showed the highest value in the effluent of La Paloma, probably this is due to use of fertilizers (Table 4). 46,51 . Cu and Zn concentrations found in sediment (total fraction) in the Mapocho River are slightly higher than those found in our study, indicating further contamination of these sediments.…”

Section: Heavy Metal Determinations In Sedimentmentioning

confidence: 99%

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Heavy Metal Concentrations in Water and Sediments From Affluents and Effluents of Mediterranean Chilean Reservoirs

Copaja

Nuñez

Muñoz

et al. 2016

J. Chil. Chem. Soc.

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RIVER flows have constant interaction between water and bed sediments; for this reason knowledge of the characteristics of the sediments is fundamental to understand water chemistry. This study determined the concentrations of heavy metals in water and sediments in the affluents and the effluents of the Mediterranean Chilean reservoirs Cogotí, Corrales, La Paloma, and Recoleta. We explore possible ecological risk and toxicity using the enrichment factor (EF), risk assessment code (RAC), threshold effect concentrations (TEC) and probable effect concentrations (PEC). The results showed that five metals: Al, Fe, Cu, Mn and Zn out of the ten measured metals were detected in both surface water and the sediments. The risk assessment code (RAC) suggested that Fe represents a medium risk in the affluent of Cogotí Reservoir: Cu, Zn and Mn represent a medium to high risk in all the dams and in both zones (affluents and effluents). The enrichment factor (EF) determined that the five metals were lithogenic. Fe, Cu, and Mn are the elements that present the greatest toxicity to microorganisms in these aquatic systems.

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Section: Heavy Metal Determination In Watermentioning

confidence: 99%

Section: Heavy Metal Determinations In Sedimentmentioning

confidence: 99%

Heavy Metal Concentrations in Water and Sediments From Affluents and Effluents of Mediterranean Chilean Reservoirs

Copaja

Nuñez

Muñoz

et al. 2016

J. Chil. Chem. Soc.

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“…It is therefore concluded that active bioturbators enhance their own exposure to toxicants, therewith increasing the observed sensitivity in terms of EC x . Moreover, active bioturbators can hence promote release of sediment-associated contaminants across the benthic-pelagic ecosystem boundary, thereby stimulating delivery of contaminants from what is often the most polluted environmental compartment in freshwater ecosystems (Burton, 2013;Roig et al, 2015). Although research linking traits to toxicant sensitivity is still relatively rare, trait based ecotoxicology offers a possibly potent tool for predicting sensitivity of benthic invertebrates and the benthic community to sediment-associated contaminants (Baird et al, 2008;Archaimbault et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Meer

Baat

Verdonschot

et al. 2017

Front. Environ. Sci.

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“…The concentrations of metals quantified in samples from Pacoti were compared to those obtained in the reference site (estuary of Galinhos, RN), and an estimated risk quotient (QR) was established through the ratio of concentrations (ROIG et al, 2015), in which it was possible to assess the sediment toxicity resulting from the contribution of the four metals analyzed, considering four risk categories : low degree (QR<1), moderate degree (1≤QR<3), considerable degree (3≤6<QR), and very high degree (QR≥6) (ISLAM et al, 2015; LOSKA et al, 1997).…”

Section: Geochemical Analysismentioning

confidence: 99%

Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

Souza

Silva

2016

HOLOS

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Pacoti estuary is located on the East coast of Ceará State/Brazil and is influenced by several sources of pollution. The sediment quality in three sampling stations was evaluated through an integrated approach. The sediments obtained were analyzed geochemically with respect to texture, organic matter, phosphorus, nitrogen and concentration of metals (Fe, Pb, Cu and Zn). Additionally, the metal loading in the sediment was determined considering a toxic risk quotient (RQ) and enrichment factor (EF). The ecotoxicological approach consisted of acute and chronic toxicity tests with species of marine invertebrates. The geochemical and ecotoxicological data were integrated using qualitative and technical criteria for multivariate analysis. The analyses showed a moderate change in the quality of the sediment Pacoti and there are influences of different contaminant sources. For this reason, one cannot disregard the input of other contaminants, not measured in this study, which probably may also have been relevant for sediment toxicity. Nonetheless, the data suggest that Pb and Cu metals as well as N tended to quality degradation in depositional areas and the sediment had some influence on the biological effects observed. KEYWORDS:

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Assessment of sediment ecotoxicological status as a complementary tool for the evaluation of surface water quality: the Ebro river basin case study

Cited by 52 publications

References 31 publications

Heavy Metal Concentrations in Water and Sediments From Affluents and Effluents of Mediterranean Chilean Reservoirs

Heavy Metal Concentrations in Water and Sediments From Affluents and Effluents of Mediterranean Chilean Reservoirs

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Geochemical and Ecotoxicological Evaluation of an Estuarine Sediment Section at Pacoti River/Ce, Brazil

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