Occurrence, source, and microbial-driven fate of aliphatic and polycyclic aromatic hydrocarbons in sediments in the Magellan seamount region
文献类型： 外文期刊
作者： Jiang, Lingbo 1 ; Zeng, Feng 2 ; Wang, Guoquan 3 ; Deng, Zhaochao 2 ; Zhou, Hanghai 5 ; Chen, Chunlei 2 ; Mu, Qinglin 3 ; Bu, Kuiyong 6 ; Zhou, Shaoxiong 6 ; Zhang, Chunfang 2 ; Dai, Yifei 1 ;
作者机构： 1.Zhoushan Inst Food & Drug Control, Zhoushan 316021, Zhejiang, Peoples R China
2.Zhejiang Univ, Ocean Coll, Zhoushan 316021, Zhejiang, Peoples R China
3.Zhejiang Marine Ecol & Environm Monitoring Ctr, Hangzhou 310012, Zhejiang, Peoples R China
4.Zhejiang Univ, Ocean Res Ctr Zhoushan, Zhoushan 316021, Peoples R China
5.Zhejiang Acad Agr Sci, Inst Environm Resource & Soil Fertilizer, Hangzhou 310021, Zhejiang, Peoples R China
6.Xinjiang Keli New Technol Dev Co Ltd, Karamay 834000, Xinjiang, Peoples R China
关键词： Magellan seamount area; Deep-sea sediments; Hydrocarbon distribution; Risk assessment; Potential source tracing; Microbial action
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 0025-326X
年卷期： 2025 年 213 卷
页码：
收录情况： SCI
摘要： Deep-sea sediments, like those in the Mariana Basin, hold various contaminants, including petroleum hydrocarbons. However, little is known about their distribution, potential risks, sources, and fate. This study analyzed 38 surface sediments and 3 sediment cores, finding & sum;n-alkanes and & sum;PAHs concentrations at 705.43 +/- 22.93 and 37.73 +/- 1.62 ng/g dw, respectively. Hydrocarbons posed minimal risks and likely originated from aquatic (n-alkanes) and pyrogenic (PAHs) sources. Microbial activity, especially in deeper layers, influenced hydrocarbon degradation, with the deepest layer showing the highest degradation potential, highlighting microbial roles in hydrocarbon transformation in deep-sea sediments. Overall, this work carries out the sources, hazards, and biological removal of hydrocarbons from deep-sea sediments and facilitates the exploration of the life cycle of organic pollutants in extreme environments.
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