Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs
文献类型：期刊论文
| 作者 | Chang, Xin1; Liu, Xiting1,5; Zhang, Kaidi4 ; Li, Anchun4; Hu, Limin1,5; Zhang, Mingyu1; Wang, Houjie1,5; Zhuang, Guangchao3; Shen, Jun2
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| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2024-11-20 |
| 卷号 | 668页码:11 |
| 关键词 | Hg/TOC ratio Organic carbon Sulfide Depositional environment Mud depocenter |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.122334 |
| 通讯作者 | Liu, Xiting(liuxiting@ouc.edu.cn) ; Zhang, Kaidi(zhang_kaidi528@163.com) |
| 英文摘要 | Mercury (Hg) concentrations normalized to their dominant hosts have been widely used to identify geological events such as massive volcanic eruptions. However, the modern Hg cycle has significantly changed, and the implications of host-normalized Hg concentrations for the Hg dynamics in contemporary coastal environments (e.g., sources, delivery mechanisms, and Hg fluxes) remain poorly understood. In this study, 66 surface sediment samples from the continental shelf of the East China Sea (ECS) were analyzed, and the total organic carbon (TOC), aluminum (Al), total sulfur (TS), and Hg concentrations were determined. Our results support that organic matter predominantly hosts Hg in these sediments. Factors such as the Hg source and abundances of organic fractions influence Hg distributions, with notable enrichment in the Changjiang River estuary and the inner shelf of the ECS, especially near the mud depocenter located off the Oujiang River estuary. The oxic to suboxic redox state and the lack of significant sulfide accumulation in surface sediments suggest that sulfides are not the primary Hg hosts. The Hg/TOC ratios, ranging from 3.0 to 169.6 (ppb/%), are particularly high in the Changjiang River estuary and exhibit an exponential correlation with the Hg accumulation rates (Hg-AR). These findings suggest that the host-normalized Hg concentration could serve as a valuable tool for assessing Hg dynamics where the accumulation rates are uncertain. |
| WOS关键词 | ORGANIC-MATTER ; CHANGJIANG ESTUARY ; CONTINENTAL-SHELF ; SURFACE SEDIMENTS ; MASS INVENTORY ; RIVER SEDIMENT ; MUD WEDGE ; CARBON ; ADJACENT ; ACCUMULATION |
| 资助项目 | National Natural Science Foundation of China[42276060] ; National Natural Science Foundation of China[42376056] ; Na-tional Key Research and Development Program of China[2023YFF0806200] ; Natural Science Foundation of Shandong Province[ZR2021YQ26] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001299705800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/198161]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Liu, Xiting; Zhang, Kaidi |
| 作者单位 | 1.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Qingdao 266100, Peoples R China 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 3.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 5.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266237, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Xin,Liu, Xiting,Zhang, Kaidi,et al. Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs[J]. CHEMICAL GEOLOGY,2024,668:11. |
| APA | Chang, Xin.,Liu, Xiting.,Zhang, Kaidi.,Li, Anchun.,Hu, Limin.,...&Shen, Jun.(2024).Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs.CHEMICAL GEOLOGY,668,11. |
| MLA | Chang, Xin,et al."Dominant host phase of mercury within the sediments of the East China Sea inner shelf: Implications for mercury inputs".CHEMICAL GEOLOGY 668(2024):11. |
入库方式： OAI收割
来源：海洋研究所
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