College 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.
College 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.
Mar Pollut Bull. 2023 Nov;196:115543. doi: 10.1016/j.marpolbul.2023.115543. Epub 2023 Sep 25.
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.
压载舱沉积物的潜在风险引起了全球关注。本研究采集了四艘远洋船舶压载舱中的沉积物样本，采用 GB 5085.6-2007 标准测定了 27 种金属（类），采用 GB 18668-2002 标准测定了 9 种金属（类）。分析和比较了这两个标准测量的 8 种典型重金属的污染特征和生态风险评估。压载舱沉积物中 Cd、Zn 和 As 的浓度较高，还应注意 Sn 和 Mn，它们在压载舱沉积物中很少研究。两种标准之间 Ni 的浓度有显著差异（P<0.05）。生态风险方法的结果表明，Cd、Zn 和 As 构成了重大的生态风险。GB 5085.6-2007 标准在反映重金属的生态风险方面具有敏感性。总的来说，本研究为未来压载舱沉积物管理中建立重金属的统一标准提供了有价值的见解。
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