Potential Ecological Risk of Heavy Metals in a Typical Tributary of the Three Gorges Reservoir

2020 ◽  
Author(s):  
Zhiqing Fang ◽  
Yongmin Wang ◽  
Deti Xie ◽  
Dingyong Wang
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Three Gorges Reservoir ◽  
Potential Ecological Risk ◽  
Three Gorges ◽  
The Three Gorges Reservoir ◽  
The Three Gorges

scholarly journals Pollution Characteristics and Ecological Risk Assessment of Heavy Metals in Sediments of the Three Gorges Reservoir

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1798
Author(s):  
Lujie Shui ◽  
Xiaojie Pan ◽  
Xiaojuan Chen ◽  
Fengyi Chang ◽  
Duanji Wan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Cluster Analysis ◽  
Ecological Risk ◽  
Three Gorges Reservoir ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Three Gorges ◽  
Ecological Risk Index ◽  
The Three Gorges

In order to understand the spatial distribution and ecological risk of heavy metal pollution in the sediments of the Three Gorges Reservoir, surface sediment samples in six typical tributaries and estuaries were analyzed. The heavy metal content in sediment was detected by ICP-MS (PE Elan DRC Ⅱ, PerkinElmer, Waltham, MA, USA) after digestion by mixed acid. The data were evaluated and analyzed using multiple methods, including the potential ecological risk index, the geoaccumulation index (Igeo), and cluster analysis. The results show that the tributary surface sediments were polluted by heavy metals to a certain extent. Cu, Zn, Pb, and Cr have been enriched in sediments in recent years. The results of Igeo show that the pollution degree is as follows: Pb > Cu > Zn > Cr > Cd > Ni > As > Hg. According to the potential ecological risk index, the grades of Yunyang, Xiaojiang, and Xinjin are all medium risk, and Cd has the highest contribution rate. Combined with field investigation data, cluster analysis, and correlation analysis, we conclude that Cu, Zn, and Cr are likely to come from agricultural chemical fertilizers and industrial sewage, while Pb mainly comes from the discharge of ship fuel.

Occurrence, distribution, and risk assessment of the metals in sediments and fish from the largest reservoir in China

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60322-60329 ◽  
Author(s):  
Bo Gao ◽  
Huaidong Zhou ◽  
Yang Yu ◽  
Yuchun Wang
Keyword(s):  
Risk Assessment ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Three Gorges Reservoir ◽  
Three Gorges ◽  
The Three Gorges Reservoir ◽  
The Three Gorges

The concentrations, distribution, and ecological risk assessment of the metals in sediments and fish were investigated in the mainstream and tributaries of the Three Gorges Reservoir (TGR) after a submergence period.

scholarly journals Characteristics of Heavy Metals and Pb Isotopic Composition in Sediments Collected from the Tributaries in Three Gorges Reservoir, China

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Bo Gao ◽  
Huaidong Zhou ◽  
Yong Huang ◽  
Yuchun Wang ◽  
Jijun Gao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ecological Risk ◽  
Three Gorges Reservoir ◽  
Risk Index ◽  
Potential Ecological Risk ◽  
Smelting Process ◽  
Isotopic Ratios ◽  
Three Gorges ◽  
Anthropogenic Inputs ◽  
Local Background

The concentrations, distribution, accumulation, and potential ecological risk of heavy metals (Cr, Cu, Zn, Ni, As, Pb, Cd, and Hg) in sediments from the Three Gorges Reservoir (TGR) tributaries were determined and studied. Pb isotopic compositions in sediments were also measured to effectively identify the potential Pb sources. The results showed that the average concentrations of heavy metals in sediment of TGR tributaries were higher than the local background values of soils and sediments in China. The assessment by Geoaccumulation Index indicated that Cu, Ni, and Hg were at the “slightly polluted” level and Cd was ranked as the “moderately polluted” level in tributary sediments of TGR. The assessment by Potential Ecological Risk Index showed that Hg and Cd were the predominant elements in tributary sediments in TGR. The Pb isotopic ratios in sediments varied from 1.171 to 1.202 for206Pb/207Pb and from 2.459 to 2.482 for208Pb/207Pb in TGR. All Pb isotopic ratios in sediments were similar to those from coal combustion, lead ores (the mining activities and smelting process), and cement material, indicating that these anthropogenic inputs may be the main sources for Pb pollution in sediments of TGR tributaries.

Enrichment and mobility of cadmium and other heavy metals in the area of the Three-Gorges Reservoir

2006 ◽  
Vol 25 (S1) ◽  
pp. 122-123
Author(s):  
Jiang Tang ◽  
Yong Li ◽  
Jiali Lei ◽  
Shijie Wang ◽  
Tangfu Xiao
Keyword(s):  
Heavy Metals ◽  
Three Gorges Reservoir ◽  
Three Gorges ◽  
The Three Gorges Reservoir ◽  
The Three Gorges
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