Coral skeletons reveal the impacts of oil pollution on seawater chemistry in the northern South China Sea.
Coral skeletons reveal the impacts of oil pollution on seawater chemistry in the northern South China Sea.
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DOI：
10.1016/j.chemosphere.2023.139632
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发表时间：
2023-07
期刊：
影响因子：
8.8
通讯作者：
Sirong Xie;Wei Jiang;Chun-Cheng Feng;Yinan Sun;Yansong Han;Yuwen Xiao;Chaoshuai Wei;Kefu Yu
中科院分区：
文献类型：
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作者：
Sirong Xie;Wei Jiang;Chun-Cheng Feng;Yinan Sun;Yansong Han;Yuwen Xiao;Chaoshuai Wei;Kefu Yu
石油污染会向海水中释放具有累积毒性的微量金属（TM），长期危害海洋生态系统。然而，由于缺乏相关的研究，我们对石油污染对海水中TM的影响和机制的认识受到限制。因此，我们研究了南海北方Poritescoral骨骼中TM的10年逐月变化，并结合海水、沉积物中TM的空间分布和燃油中TM的特征进行了补充。主成分-多元线性回归分析结果表明，溢油污染对表层海水中TM的贡献率为77.2%，溢油释放的TM（Ni、V、Cr、Co、Cu、Mn、Fe和Mo）在表层海水中的滞留时间约为1.4个月。由于金属的地球化学性质，它们的季节变化受热带气旋（Ni，V，Cr，Co，Cu，Mn，Fe和Mo），冬季季风（Pb，Cd，Ba和Zn）和海面温度（Sr）控制。本研究表明珊瑚骨骼可以作为研究海洋石油污染的新工具。这为从空间和时间角度准确识别和量化石油污染对海水中TM的影响提供了有价值的参考数据。
Oil pollution can release trace metals (TMs) with cumulative toxicity into seawater, harming marine ecosystems in the long term. However, the lack of studies has inhibited our understanding of the effects and mechanisms of oil pollution on TMs in seawater. Hence, we investigated the 10-year monthly variation of TMs inPoritescoral skeletons from the northern South China Sea (SCS), complemented by spatial distribution of TMs in seawater, sediments and characterization of TMs in fuel oil. The results of principal component-multivariate linear regression showed that the total contribution of oil pollution as a source to TMs in surface seawater was 77.2%, where the residence time of TMs (Ni, V, Cr, Co, Cu, Mn, Fe, and Mo) released from oil spills in surface seawater was approximately 1.4 months. Due to the geochemical nature of the metals, their seasonal variations are controlled by tropical cyclones (Ni, V, Cr, Co, Cu, Mn, Fe, and Mo), winter monsoons (Pb, Cd, Ba, and Zn) and sea surface temperature (Sr). This study shows that coral skeletons can be used as a new tool to study marine oil pollution. This provides valuable reference data for accurately identifying and quantifying the effects of oil pollution on TMs in seawater from a spatial and temporal perspective.