Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy
文献类型：期刊论文
| 作者 | Ma Chenyan; Yang Haiquan; Dai Zhihui; Chen Jingan; Wang Jingfu |
| 刊名 | Journal of Chemistry
 |
| 出版日期 | 2016 |
| 期号 | 3页码:1-9 |
| 英文摘要 | 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 FeS 2 and the intermediate S significantly increased, suggesting rapid processes of sulfate reduction and sulfide reoxidation with the increasing depths. |
| 学科主题 | 环境地球化学 |
| 语种 | 英语 |
| 公开日期 | 2017-09-13 |
| 源URL | [http://ir.gyig.ac.cn:8080/handle/352002/6194]  |
| 专题 | 地球化学研究所_环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ma Chenyan,Yang Haiquan,Dai Zhihui,et al. Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy[J]. Journal of Chemistry,2016(3):1-9. |
| APA | Ma Chenyan,Yang Haiquan,Dai Zhihui,Chen Jingan,&Wang Jingfu.(2016).Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy.Journal of Chemistry(3),1-9. |
| MLA | Ma Chenyan,et al."Sulfur Speciation in the Surface Sediments of Lakes from Different Regions, China: Characterization by S K-Edge XANES Spectroscopy".Journal of Chemistry .3(2016):1-9. |
入库方式： OAI收割
来源：地球化学研究所
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