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Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy
Joint Authors
Jingfu, Wang
Jingan, Chen
Zhihui, Dai
Haiquan, Yang
Chenyan, Ma
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-16
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
X-ray absorption near edge structure (XANES) spectroscopy affords the opportunity to determine redox status for element S in the aquatic ecosystems.
However, there have been relatively few studies of S XANES spectroscopy in the terrestrial aquatic ecosystems.
In this study, XANES technology was used to examine changes in S speciation in the sediments collected from Taihu Lake, Qinghai Lake, Dianchi Lake, Caohai Lake, and Hongfeng Lake located in distinct geological background areas of China.
The results showed that sedimentary S in Qinghai Lake has a high proportion of sulfate averaged 88.9% due to physical weathering of watershed rocks, while deposited S in Taihu Lake has a high fraction of intermediate S (36.5%), which may be the response of the agricultural nonpoint source pollution in drainage basin.
The three lakes located in Southwest China have similar composition characteristics of S species, indicating similar S sources including chemical weathering of carbonate and atmospheric deposition.
60–90% of S compounds in the surface sediments were in the form of sulfate and FeS.
In deeper layers, the ratio of FeS2 and the intermediate S significantly increased, suggesting rapid processes of sulfate reduction and sulfide reoxidation with the increasing depths.
American Psychological Association (APA)
Jingfu, Wang& Jingan, Chen& Zhihui, Dai& Haiquan, Yang& Chenyan, Ma. 2016. Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy. Journal of Chemistry،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1107638
Modern Language Association (MLA)
Jingfu, Wang…[et al.]. Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy. Journal of Chemistry No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1107638
American Medical Association (AMA)
Jingfu, Wang& Jingan, Chen& Zhihui, Dai& Haiquan, Yang& Chenyan, Ma. Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy. Journal of Chemistry. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1107638
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1107638