麦哲伦海山地区沉积物中脂肪族和多环芳烃的赋存、来源和微生物驱动的命运

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin Pub Date : 2025-02-08 DOI:10.1016/j.marpolbul.2025.117645

Lingbo Jiang , Feng Zeng , Guoquan Wang , Zhaochao Deng , Hanghai Zhou , Chunlei Chen , Qinglin Mu , Kuiyong Bu , Shaoxiong Zhou , Chunfang Zhang , Yifei Dai

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引用次数: 0

摘要

像马里亚纳盆地那样的深海沉积物含有各种污染物，包括石油碳氢化合物。然而，人们对它们的分布、潜在风险、来源和命运知之甚少。对38个表层沉积物和3个沉积物岩心进行了分析，∑正构烷烃和∑多环芳烃的浓度分别为705.43±22.93和37.73±1.62 ng/g dw。碳氢化合物的风险最小，可能来自水生（正构烷烃）和热原（多环芳烃）来源。微生物活动，特别是在深海，影响碳氢化合物的降解，其中最深层显示出最高的降解潜力，突出了微生物在深海沉积物中碳氢化合物转化中的作用。总的来说，本工作开展了深海沉积物中碳氢化合物的来源、危害和生物去除，促进了极端环境下有机污染物生命周期的探索。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Occurrence, source, and microbial-driven fate of aliphatic and polycyclic aromatic hydrocarbons in sediments in the Magellan seamount region

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Occurrence, source, and microbial-driven fate of aliphatic and polycyclic aromatic hydrocarbons in sediments in the Magellan seamount region

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 ∑n-alkanes and ∑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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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.