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Updated: Jul 15, 2025
Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies
Published on: July 1, 2016
Comparison of heavy metal pollution and ecological risk assessment in ballast tank sediments based on two applicable
Jiefeng Jiang1, Jinjie Li1, Jianwu Chen1
1College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China.
Abstract:
The potential risks of ballast tank sediments have garnered global attention. This study collected sediment samples from ballast tanks of four transoceanic ships and determined 27 metal(loid) s by GB 5085.6-2007 and 9 metal(loid)s by GB 18668-2002. The pollution characteristics and ecological risk assessment of 8 typical heavy metals measured by both standards were analyzed and compared. Concentrations of Cd, Zn, and As were found to be high in the ballast tank sediments, and attention should also be directed toward Sn and Mn, which were rarely studied in ballast tank sediments. The concentration of Ni had significant differences between the two standards (P < 0.05). The results of ecological risk methods indicate that Cd, Zn, and As pose significant ecological risks. GB 5085.6-2007 demonstrated sensitivity in reflecting the ecological risks of heavy metals. Overall, this study provides valuable insights into establishing a unified standard for heavy metals for future ballast tank sediment management.
