Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 24, Issue 4, Pages 3951-3958Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-016-8113-z
Keywords
Ballast tank sediment; Heavy metal; Multivariate analysis; Risk assessment; Sediment management; Potential source
Categories
Funding
- National Natural Science Foundation of China [51508318]
- Chenguang Program from Shanghai Education Development Foundation [15CG53]
- Shanghai Municipal Education Commission
- training project of young college faculty of Shanghai [ZZshhs15106]
- Shanghai Committee of Science and Technology [16ZR1414800]
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This study was conducted to illustrate the contents and potential ecological risk of heavy metals in ballast tank sediment. Ballast sediment samples were collected from six ships during their stay in shipyard, and the heavy metals were determined by inductive coupled plasma emission spectrometer. Results showed that high concentrations of heavy metals were detected in all six sediment samples following the order: Zn > Cu > Pb > Cr > As > Cd > Hg. The geoaccumulation index explained the average pollution degree of heavy metals decreased as the following: Zn > Pb > Cu > As > Cr > Hg, and the environmental risk indices suggested that concentration found of Zn, Pb, and Cu might be highly toxic to aquatic organisms. Principal component and correlation analysis indicated the metal pollution in ballast tank sediment was affected by complex and different contamination mechanisms, and the corrosion of ballast tank played an important role in this process. In conclusion, this study is very useful for comprehensive consideration and efficient management of ballast tank sediment in order to protect the marine environment.
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