2019
DOI: 10.1080/13102818.2019.1638833
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Ecological risk assessment for eutrophication and heavy metal pollution of Suyahu Reservoir sediments

Abstract: Focusing on the sediment in Suyahu Reservoir (a typical plain reservoir in Henan Province, China), concentrations of eutrophication-causing substances (TOC, TN and TP) and heavy metal contamination (Zn, Pb, Cd, Cu, Cr, Ni, As and Hg) were measured. Spatial distribution of these contaminants and the resulting potential ecological risk were investigated in detail. The results indicated that the eutrophication-causing substances were concentrated in the reservoir sediment, with high concentrations in the south an… Show more

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Cited by 14 publications
(9 citation statements)
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“…The outlined problem, observed in many dam reservoirs, especially shallow reservoirs with low levels of thermal strati cation, has been addressed by many authors [53][54][55] . These authors agree that the main sources of pollution in this type of reservoir are recharge water and leachate from adjacent areas.…”
Section: Discussionmentioning
confidence: 99%
“…The outlined problem, observed in many dam reservoirs, especially shallow reservoirs with low levels of thermal strati cation, has been addressed by many authors [53][54][55] . These authors agree that the main sources of pollution in this type of reservoir are recharge water and leachate from adjacent areas.…”
Section: Discussionmentioning
confidence: 99%
“…Due to this, works are periodically conducted aimed at their removal from the reservoir. Knowledge of pollution of bottom sediments is necessary to plan works related to their removal to avoid secondary pollution [28,95]. Pollutants deposited in bottom sediments can also have a negative effect on dredging workers who come in direct contact with such sediments.…”
Section: Discussionmentioning
confidence: 99%
“…Metals accumulated in reservoirs can be later released from the bottom sediments to the water column [25][26][27]. Heavy metals in excessive concentrations can have a toxic effect on aquatic organisms [28,29]. They can also be accumulated in tissues of such organisms, e.g., fish, and pose a threat to people consuming them [30][31][32].…”
Section: Of 20mentioning
confidence: 99%
“…The Potential Ecological Risk Index (PERI) was proposed by [20] to be used as a diagnostic tool for ecological pollution. The potential ecological risk index method [20] uses the degree of accumulation of PTEs in sediment relative to the highest background value in sediment before industrialization and the corresponding ecological toxicity coefficient, with a weighted sum leading to the ecological hazard index [30]. Table 3 presents the criteria for the degree of ecological risk.…”
Section: Ecological Riskmentioning
confidence: 99%