Humic sulfur in eutrophic bay sediments: Characterization by sulfur stable isotopes and K-edge XANES spectroscopy
文献类型：期刊论文
| 作者 | Zhu, MX; Chen, LJ; Yang, GP; Huang, XL; Ma, CY; Ma CY(马陈燕)
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| 刊名 | ESTUARINE COASTAL AND SHELF SCIENCE
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| 出版日期 | 2014 |
| 卷号 | 138页码:121-129 |
| 关键词 | sulfur isotopes sediment chemical speciations organosulfur spectroscopic techniques Jiaozhou Bay |
| 英文摘要 | Organic sulfur (OS) is an important sedimentary sulfur pool in marine sediments and chemical extractions are often used for quantification of various OS pools, however, OS sources and mechanisms of OS formation are not well understood. In this study, sulfur stable isotope and sulfur X-ray absorption near edge structure (XANES) spectroscopy were combined to investigate the sources and speciation of humic-acid sulfur (HA-S) and fulvic-acid sulfur (FA-S) in sediments of eutrophic Jiaozhou Bay. Whilst there may be some indication that eutrophication has enhanced FA-S burial in the sediment, this has not substantially modified the characteristically low humic sulfur (i.e., HA-S + FA-S) contents of the sediments. Sulfur isotopic compositions indicate that both HA-S and FA-S are mixtures of diagenetic and biosynthetic OS in origin; HA-S is dominated by biosynthetic sulfur and FA-S by diagenetic source. Sulfur isotopic compositions and contents of pyrite and diagenetic OS indicate that inhibition of sulfurization by pyrite formation, if any, appears insignificant. XANES analysis suggests that the contents of high oxidized OS (i.e., sulfones and ester-sulfates) and strongly reduced OS species are comparable in the HA-S, whereas the FA-S is dominated by strongly reduced OS as a result of enhanced sulfurization. (C) 2014 Elsevier Ltd. All rights reserved. |
| 学科主题 | Marine & Freshwater Biology; Oceanography |
| 收录类别 | SCI |
| WOS记录号 | WOS:000331511200012 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225006]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhu, MX,Chen, LJ,Yang, GP,et al. Humic sulfur in eutrophic bay sediments: Characterization by sulfur stable isotopes and K-edge XANES spectroscopy[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2014,138:121-129. |
| APA | Zhu, MX,Chen, LJ,Yang, GP,Huang, XL,Ma, CY,&马陈燕.(2014).Humic sulfur in eutrophic bay sediments: Characterization by sulfur stable isotopes and K-edge XANES spectroscopy.ESTUARINE COASTAL AND SHELF SCIENCE,138,121-129. |
| MLA | Zhu, MX,et al."Humic sulfur in eutrophic bay sediments: Characterization by sulfur stable isotopes and K-edge XANES spectroscopy".ESTUARINE COASTAL AND SHELF SCIENCE 138(2014):121-129. |
入库方式： OAI收割
来源：高能物理研究所
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