Heavy metal fractions and ecological risk assessment in sediments from urban, rural and reclamation-affected rivers of the Pearl River Estuary, China

Chemosphere ◽  
2017 ◽  
Vol 184 ◽  
pp. 278-288 ◽  
Author(s):  
Guangliang Zhang ◽  
Junhong Bai ◽  
Rong Xiao ◽  
Qingqing Zhao ◽  
Jia Jia ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Heavy Metal ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River ◽  
The Pearl River Estuary ◽  
Urban Rural ◽  
The Pearl River

Preliminary evaluation of ecological risk for the city area from the Pearl River Estuary

2014 ◽  
Vol 70 (10) ◽  
pp. 1648-1655 ◽  
Author(s):  
Qiuying Chen ◽  
KinChung Ho ◽  
Jingling Liu
Keyword(s):  
Relative Risk ◽  
Ecological Risk ◽  
Water Environment ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Risk Scores ◽  
Pearl River ◽  
Total Risk ◽  
The Pearl River Estuary ◽  
The Pearl River

It is essential to evaluate the ecological risk for the estuary cities area for the environmental restoration of the estuary. The ecological risk of six city areas from the Pearl River Estuary were evaluated by using the relative risk model. The relative risk assessment method was developed by considering the river network density in the sub-region. The results indicated that Dongguan had the largest ecological risk pressure with total risk scores as high as 10,846.3, and Hong Kong had the lowest ecological risk pressure with total risk scores up to 4,104.6. The greatest source was domestic sewage with total risk scores as high as 1,798.6, followed by urbanization and industry. Oxygen-consuming organic pollutants, organic toxic pollutants and nutrients were the major stressors of the water environment. In terms of habitats, the water environment was enduring the greatest pressure. For the endpoints, water deterioration faced the largest risk pressure.

Heavy metal distribution in sediment profiles of the Pearl River estuary, South China

2000 ◽  
Vol 15 (5) ◽  
pp. 567-581 ◽  
Author(s):  
Xiangdong Li ◽  
Onyx W.H. Wai ◽  
Y.S. Li ◽  
Barry J. Coles ◽  
Michael H. Ramsey ◽  
...  
Keyword(s):  
Heavy Metal ◽  
South China ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Metal Distribution ◽  
Pearl River ◽  
Heavy Metal Distribution ◽  
The Pearl River Estuary ◽  
Sediment Profiles ◽  
The Pearl River
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