Metals Pollution and Ecological Risk Assessment of Sediments in the Poyang Lake, China

The concentrations of several metals and their geochemical species in surface sediment from Poyang Lake main channel and its tributary entrance were analyzed. Results showed that the concentrations of Cu (28.1–213 mg/kg), Zn (82.6–257 mg/kg), Pb (49.8–81.4 mg/kg) and Ni (33.5–56.0 mg/kg) were higher...

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Published inBulletin of environmental contamination and toxicology Vol. 102; no. 4; pp. 511 - 518
Main Authors Wang, Maolan, Liu, Jingjing, Lai, Jinhu
Format Journal Article
LanguageEnglish
Published New York Springer US 01.04.2019
Springer Nature B.V
Subjects
Anthropogenic factors
Aquatic Pollution
Cadmium
Contamination
Copper
Earth and Environmental Science
Ecological risk assessment
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Human influences
Lakes
Lead
Manganese
Metal concentrations
Metals
Nickel
Oxides
Pollution
Principal components analysis
Risk assessment
Sediments
Soil Science & Conservation
Toxicity
Waste Water Technology
Water Management
Water Pollution Control
Zinc
Poyang Lake
Chemical speciation
Sediment
Heavy metals
Poyang Lake
Ecological risk assessment
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Summary:The concentrations of several metals and their geochemical species in surface sediment from Poyang Lake main channel and its tributary entrance were analyzed. Results showed that the concentrations of Cu (28.1–213 mg/kg), Zn (82.6–257 mg/kg), Pb (49.8–81.4 mg/kg) and Ni (33.5–56.0 mg/kg) were higher than the background values, while Cd (0.15–0.81 mg/kg) was lower. Zn, Cu and Ni were predominately bound to residual fraction. The content of Pb in the Fe–Mn oxides fractions was considerable. And Cd had highest concentration of exchangeable and carbonate fractions. The geoaccumulation index showed that the sediments were unpolluted with Cd, moderately polluted with Pb, Zn and Ni, while moderately to heavily polluted by Cu. Principal component analysis indicated that Ni was mainly lithogenic in origin and Cu, Pb, Zn and Cd were influenced by anthropogenic contamination. The concentrations of Cu, Pb and Zn were above the threshold effects level (TEL) but below the probable effects level (PEL), Cd was below TEL, whereas the contents of Ni were above PEL. The potential ecological risk index showed Cu posed moderate ecological risks, Cd, Ni, Pb and Zn posed low ecological risk. The general ecological risk belonged to the high risk.
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ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-019-02577-2