Dissolved oxygen-driven transformations of inorganic sulfur and heavy metals during mariculture sediment aging
文献类型：期刊论文
| 作者 | Li, Zhaoran; Sheng, Yanqing |
| 刊名 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
 |
| 出版日期 | 2025-08-16 |
| 卷号 | 47期号:9页码:13 |
| 关键词 | Dissolved oxygen Reduced inorganic sulfur Heavy metals Environmental behaviour Mariculture sediment aging |
| ISSN号 | 0269-4042 |
| DOI | 10.1007/s10653-025-02713-4 |
| 通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| 英文摘要 | Dissolved oxygen (DO) critically regulates biogeochemical processes in mariculture sediments, yet its integrated effects on sulfur-metal interactions during sediment aging remain poorly understood. This study investigated the migration and transformation of reduced inorganic sulfur (RIS) and heavy metals in mariculture sediments under varying DO levels. Lower DO accelerated the dominance of acid-volatile sulfide (AVS) within the reduced inorganic sulfur pool (AVS/RIS = 56.11% under DO-1 vs. 41.18% under DO-3) and shortened the time required for AVS to become the dominant component by 16.67% (compared to DO-3). DO variations minimally affected overall metal mobility (coefficient of variation, CV < 12%), but Cu exhibited exceptional sensitivity. The influence of DO concentration was particularly significant on the oxidizable (F3) and residual (F4) fractions of Cu, and the F4 fraction of Pb. The F4 fraction of both Cu and Pb increased under low DO, likely due to reductive activation and lattice diffusion. The differing impacts of DO on RIS (significant) versus heavy metal speciation (relatively minor) resulted in significant variations in the correlations between sulfur species and heavy metal fractions across DO treatments. Sediment microbial richness and diversity declined with decreasing DO, significantly altering the relative abundance of bacterial phyla and the genus Desulfuromonas. DO primarily regulated sediment carbon, sulfur, and iron cycling, exerting its most pronounced impacts on sulfur transformations. Depleted DO intensifies the environmental hazards of inorganic sulfides through enhanced mobilization. Proactive control strategies are therefore imperative during hypoxic episodes to mitigate sulfide-driven ecological risks. This study provides new insights for managing sediment redox conditions in mariculture systems. |
| WOS关键词 | SULFATE-REDUCING BACTERIA ; MARINE ; PHOSPHORUS ; SOIL |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001551826800001 |
| 资助机构 | National Key Research and Development Program of China ; Project of Shandong Province Marine Aquaculture Innovation and Entrepreneurship Community |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41028]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Sheng, Yanqing |
| 作者单位 | Chinese Acad Sci, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhaoran,Sheng, Yanqing. Dissolved oxygen-driven transformations of inorganic sulfur and heavy metals during mariculture sediment aging[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2025,47(9):13. |
| APA | Li, Zhaoran,&Sheng, Yanqing.(2025).Dissolved oxygen-driven transformations of inorganic sulfur and heavy metals during mariculture sediment aging.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,47(9),13. |
| MLA | Li, Zhaoran,et al."Dissolved oxygen-driven transformations of inorganic sulfur and heavy metals during mariculture sediment aging".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 47.9(2025):13. |
入库方式： OAI收割
来源：烟台海岸带研究所
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