Humic sulfur in eutrophic bay sediments: Characterization by sulfur stable isotopes and K-edge XANES spectroscopy
Zhu, MX; Chen, LJ; Yang, GP; Huang, XL; Ma, CY; Ma CY(马陈燕)
刊名ESTUARINE COASTAL AND SHELF SCIENCE
2014
卷号138页码:121-129
关键词sulfur isotopes sediment chemical speciations organosulfur spectroscopic techniques Jiaozhou Bay
学科分类Marine & Freshwater Biology; Oceanography
DOI10.1016/j.ecss.2013.12.027
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.
收录类别SCI
WOS记录号WOS:000331511200012
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225006
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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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.
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