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<p>Heavy metals have become significant contributors to ecosystem and human health risks. Rapid development in recent decades has caused significant environmental disturbances in the Ningbo-Zhoushan Port and its surrounding bay area. This study quantitatively characterized seven heavy metals in seawater and eight commercially valuable species from the Ningbo-Zhoushan Port, including five fish and three crustaceans. Heavy metal concentrations showed significant spatiotemporal variations influenced by effluent discharge, riverine input, and atmospheric deposition. Higher concentrations typically occurred in estuaries, ports and other coastal areas having strong anthropogenic activity. Ecological risks were generally low, but Zn and Hg posed risks during winter, necessitating enhanced monitoring. In addition, the metal concentrations in species were mostly below regulatory thresholds, except for As in one crustacean species. The health risk was primarily associated to As. Therefore, enhanced monitoring and management of As-related risks is necessary to protect public health. The evidence from this study provides a basis for environmental protection and heavy metal risk abatement strategies for Ningbo-Zhoushan Port and other Chinese port ecosystems.</p>

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Levels, Spatio-temporal Distribution, Bioaccumulation Ability and Health Risk Assessment of Heavy Metals in Marine Organisms: Evidence from the Ningbo-Zhoushan Port, East China Sea

  • 期刊论文

  • 发表日期：

    2026年1月15日

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  • Ziliang Yu,
  • Dezhong Wang,
  • Wenzhuo Zhu,
  • Jinchao Cai,
  • Weiwei Ma,
  • Weihua Feng

摘要

Heavy metals have become significant contributors to ecosystem and human health risks. Rapid development in recent decades has caused significant environmental disturbances in the Ningbo-Zhoushan Port and its surrounding bay area. This study quantitatively characterized seven heavy metals in seawater and eight commercially valuable species from the Ningbo-Zhoushan Port, including five fish and three crustaceans. Heavy metal concentrations showed significant spatiotemporal variations influenced by effluent discharge, riverine input, and atmospheric deposition. Higher concentrations typically occurred in estuaries, ports and other coastal areas having strong anthropogenic activity. Ecological risks were generally low, but Zn and Hg posed risks during winter, necessitating enhanced monitoring. In addition, the metal concentrations in species were mostly below regulatory thresholds, except for As in one crustacean species. The health risk was primarily associated to As. Therefore, enhanced monitoring and management of As-related risks is necessary to protect public health. The evidence from this study provides a basis for environmental protection and heavy metal risk abatement strategies for Ningbo-Zhoushan Port and other Chinese port ecosystems.