Pollution and Potential Biological Toxicity Assessment Using Heavy Metals from Surface Sediments of Liangtan River, Chongqing, China

Liu, Guo Tao; Zheng, Xiang; Peng, Xianghe; Li, Jian Hua

doi:10.4028/www.scientific.net/amm.137.262

Cited by 2 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…; Liu et al . ). Inflowing rivers carry large loads of suspended sediments during flash flood events, which enhance sedimentation along the reservoir basin because of lower water flow velocity (Gamvroudis et al .…”

Section: Introductionmentioning

confidence: 97%

“…Sediments are sinks for metals, organic matter and nutrients, which may be released back to the water column under certain chemical conditions (Trojanowska & Izydorczyk ; Liu et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…Reservoirs constructed in semiarid catchments often exhibit various environmental and water quality problems such as eutrophication, metal pollution and sedimentation (M€ uller et al 2000;Palma et al 2010;Czerniawska-Kusza & Kusza 2011;Lindim et al 2011;Liu et al 2012). Inflowing rivers carry large loads of suspended sediments during flash flood events, which enhance sedimentation along the reservoir basin because of lower water flow velocity (Gamvroudis et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Analyses of reservoir sediments reveal industrial development processes are coupled with an increased quantity of industrial and mining wastes, growth of agriculture and/or inadequately functioning sewage treatment plants (M€ uller et al 2000). Sediments are sinks for metals, organic matter and nutrients, which may be released back to the water column under certain chemical conditions (Trojanowska & Izydorczyk 2010;Liu et al 2012).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nutrient and heavy metal storage and mobility within sediments in Kouris Reservoir, Cyprus

2017

View full text Add to dashboard Cite

The objective of this study was to evaluate the risks associated with nutrient and heavy metal pollution in the water and sediments of Kouris Reservoir in Cyprus, and to recommend applicable measures to alleviate them. The reservoir drainage area contains various historic abandoned copper mines existing in an ophiolite geological substrate. Kouris Reservoir water is classified as oligotrophic to mesotrophic, with phosphorus being the limiting factor for algae growth. The thermal stratification of the reservoir enhances anoxic conditions in the reservoir hypolimnion, initiating phosphorus release back into the water column from the lake bottom sediments. The increased phosphorus release, in combination with increased water temperatures during the summer months (i.e. reaching 27°C in August), may be the key factors enhancing the growth of microbial communities and cyanobacteria blooms. The sediment of Kouris Reservoir is classified as 'low risk' on the basis of the Ecological Risk Index scheme, in contrast to the Geoaccumulation Index, which indicates a moderate degree of contamination for chromium (Cr), nickel (Ni) and copper (Cu), and a high degree for lead (Pb). Heavy metals are strongly bound to the sediment matrix at pH values between 7 and 9, but can be released back into the water column at potential acid pH values. In addition, the sediments exhibit a high copper and chromium absorption affinity under current water quality conditions in the reservoir, as shown by batch absorption experiments. The experimental results suggest dredging of the reservoir sediment, and its subsequent dumping of the sediments near influent streams, would have adverse effects on the environment in the event of acid rain or other environmental changes that might acidify the sediment.

show abstract

Section: Introductionmentioning

confidence: 97%

“…Sediments are sinks for metals, organic matter and nutrients, which may be released back to the water column under certain chemical conditions (Trojanowska & Izydorczyk ; Liu et al . ).…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nutrient and heavy metal storage and mobility within sediments in Kouris Reservoir, Cyprus

2017

View full text Add to dashboard Cite

show abstract

Heavy metals in sediments, soils, and aquatic plants from a secondary anabranch of the three gorges reservoir region, China

Gao

Sun

Jiang

et al. 2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

We investigated the occurrence of cadmium (Cd), copper (Cu), chromium (Cr), nickel (Ni), lead (Pb), Znic (Zn), iron (Fe), manganese (Mn), and magnesium (Mg) in sediments, as well as in related soils and aquatic plants in the Liangtan River, a typical secondary anabranch of the Yangtze River in the Three Gorges Reservoir Region (TGRR) of China. We found that sediments accumulated more metals than soils and aquatic plants. Concentrations of the nine metals in sediments and soils followed the same sequence, while their concentrations in aquatic plants followed a different sequence. Potential adverse effects of contaminated sediments on benthic fauna were evaluated, and the results showed that the toxic effect on benthic organisms followed the sequence Zn > Ni > Cr > Cu > Cd > Pb. The potential ecological risk index analysis indicated that Cd in sediments had considerable ecological risk, whereas Cr, Cu, Zn, Ni, and Pb had low ecological risk. The potential ecological risk index (RI) of the heavy metals in sediments of the Liangtan River was 174.9, indicating moderate ecological risk. The transfer factor trend of metals for aquatic plants showed that Cd and Ni had the most and least accumulation, respectively. For Cu, Cd, Mg, Pb, and Cr, a significant positive correlation of the metal concentrations was observed between sediments and soils, but no correlations (excluding Cr) were detected between sediments and aquatic plants. Our study indicated that anthropogenic input may be the primary source of metal contamination in the Liangtan River, and that Zn and Cd pollution in the Liangtan River should be further explored.

show abstract

Pollution and Potential Biological Toxicity Assessment Using Heavy Metals from Surface Sediments of Liangtan River, Chongqing, China

Cited by 2 publications

References 14 publications

Nutrient and heavy metal storage and mobility within sediments in Kouris Reservoir, Cyprus

Nutrient and heavy metal storage and mobility within sediments in Kouris Reservoir, Cyprus

Heavy metals in sediments, soils, and aquatic plants from a secondary anabranch of the three gorges reservoir region, China

Contact Info

Product

Resources

About