Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir
We investigated the distribution and chemical speciation of Cd, Cr, Cu, Pb and Zn in the water level-fluctuating (WLF) zone of the main stream (MS) and tributaries (ZX and MX) of the Three Gorges Reservoir. We evaluated the ecological risk and pollution level from heavy metals based on the Potential...
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doaj-b9b58bf7714f4fa59bf05e2f2e9852232020-11-25T01:34:24ZengTaylor & Francis GroupChemical Speciation & Bioavailability0954-22992047-65232017-01-01291899610.1080/09542299.2017.13351791335179Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges ReservoirLi-ping He0Dan Liu1Jun-jie Lin2Zhi-guo Yu3Xiao-xia Yang4Chuan Fu5Zheng-xue Liu6Qiao-hua Zhao7College of Architecture and Environment, Sichuan UniversityChongqing Three Gorges Vocation CollegeChongqing Three Gorges UniversityNanjing University of Information Science and TechnologyChongqing Academy of Agricultural SciencesChongqing Three Gorges UniversityChongqing Three Gorges UniversityNanjing University of Information Science and TechnologyWe investigated the distribution and chemical speciation of Cd, Cr, Cu, Pb and Zn in the water level-fluctuating (WLF) zone of the main stream (MS) and tributaries (ZX and MX) of the Three Gorges Reservoir. We evaluated the ecological risk and pollution level from heavy metals based on the Potential Ecological Risk Index (RI), Risk Assessment Code (RAC), and Ratio of Secondary Phase and Primary Phase (RSP). Our results indicated that the total and bio-available heavy metal contents were higher in the tributaries than in the MS. Moderate pollution from Cd and light pollution from Pb were observed both at the MS and ZX sites, whereas the MX site exhibited a pattern of heavy Cd pollution and light Cr and Pb pollution. In our study area, the results indicated that Cd exhibited a higher ecological risk than did the other heavy metals. Finally, the pH and nitrogen content of sediments may play a key role in controlling the amount of heavy metal bioavailability, further inducing a higher potential ecological risk.http://dx.doi.org/10.1080/09542299.2017.1335179Heavy metalschemical speciationThree Gorges Reservoir AreaYangtze River tributaryecological risk |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Li-ping He Dan Liu Jun-jie Lin Zhi-guo Yu Xiao-xia Yang Chuan Fu Zheng-xue Liu Qiao-hua Zhao |
spellingShingle |
Li-ping He Dan Liu Jun-jie Lin Zhi-guo Yu Xiao-xia Yang Chuan Fu Zheng-xue Liu Qiao-hua Zhao Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir Chemical Speciation & Bioavailability Heavy metals chemical speciation Three Gorges Reservoir Area Yangtze River tributary ecological risk |
author_facet |
Li-ping He Dan Liu Jun-jie Lin Zhi-guo Yu Xiao-xia Yang Chuan Fu Zheng-xue Liu Qiao-hua Zhao |
author_sort |
Li-ping He |
title |
Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir |
title_short |
Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir |
title_full |
Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir |
title_fullStr |
Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir |
title_full_unstemmed |
Total nitrogen and pH-controlled chemical speciation, bioavailability and ecological risk from Cd, Cr, Cu, Pb and Zn in the water level-fluctuating zone sediments of the Three Gorges Reservoir |
title_sort |
total nitrogen and ph-controlled chemical speciation, bioavailability and ecological risk from cd, cr, cu, pb and zn in the water level-fluctuating zone sediments of the three gorges reservoir |
publisher |
Taylor & Francis Group |
series |
Chemical Speciation & Bioavailability |
issn |
0954-2299 2047-6523 |
publishDate |
2017-01-01 |
description |
We investigated the distribution and chemical speciation of Cd, Cr, Cu, Pb and Zn in the water level-fluctuating (WLF) zone of the main stream (MS) and tributaries (ZX and MX) of the Three Gorges Reservoir. We evaluated the ecological risk and pollution level from heavy metals based on the Potential Ecological Risk Index (RI), Risk Assessment Code (RAC), and Ratio of Secondary Phase and Primary Phase (RSP). Our results indicated that the total and bio-available heavy metal contents were higher in the tributaries than in the MS. Moderate pollution from Cd and light pollution from Pb were observed both at the MS and ZX sites, whereas the MX site exhibited a pattern of heavy Cd pollution and light Cr and Pb pollution. In our study area, the results indicated that Cd exhibited a higher ecological risk than did the other heavy metals. Finally, the pH and nitrogen content of sediments may play a key role in controlling the amount of heavy metal bioavailability, further inducing a higher potential ecological risk. |
topic |
Heavy metals chemical speciation Three Gorges Reservoir Area Yangtze River tributary ecological risk |
url |
http://dx.doi.org/10.1080/09542299.2017.1335179 |
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