| DOI: | 10.1016/j.marpolbul.2015.11.011
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| Scopus记录号: | 2-s2.0-84949032761
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| 论文题名: | Arsenic speciation and diffusion flux in Danshuei Estuary sediments, Northern Taiwan |
| 作者: | Fang T.-H.; Chen Y.-S.
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| 刊名: | Marine Pollution Bulletin
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| ISSN: | 0025-326X
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| EISSN: | 1879-3363
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| 出版年: | 2015
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| 卷: | 101, 期:1 | | 起始页码: | 98
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| 结束页码: | 109
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| 语种: | 英语
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| 英文关键词: | Arsenic speciation
; Diffusion flux
; Redox potential
; Sequential extraction method
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| Scopus关键词: | Arsenic
; Chemical analysis
; Diffusion
; Dissolution
; Estuaries
; Extraction
; Manganese
; Positive ions
; Redox reactions
; Sedimentology
; Water
; Arsenic speciation
; Diffusion fluxes
; Dissolved concentrations
; Estuary sediments
; Geochemical behaviors
; Redox potentials
; Sediment textures
; Sequential extraction method
; Sediments
; aluminum
; arsenic
; iron oxide
; manganese oxide
; arsenic
; water pollutant
; arsenic
; chemical analysis
; concentration (composition)
; diffusion
; estuarine sediment
; iron
; manganese
; redox potential
; sediment chemistry
; sediment core
; speciation (chemistry)
; Article
; chemical analysis
; concentration response
; controlled study
; correlation analysis
; diffusion flux
; estuary
; extraction
; geochemistry
; oxidation reduction potential
; particle size
; sediment
; Taiwan
; total organic carbon
; analysis
; chemistry
; environmental monitoring
; procedures
; sediment
; water pollutant
; Danshui Estuary
; Taiwan
; Arsenic
; Environmental Monitoring
; Estuaries
; Geologic Sediments
; Taiwan
; Water Pollutants, Chemical
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| Scopus学科分类: | Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
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| 英文摘要: | Sedimentary As, Fe and Mn species in core sediments from the Danshuei Estuary, an anoxic estuary, were studied using a five-sequential extraction method followed by chemical analyses of these elements. The sediment texture, redox potential and dissolved concentrations of these elements in pore water were also determined. Dissolved As diffusion flux was also calculated. Higher concentrations of sedimentary As were found at the middle and lower estuary stations. The sedimentary As species in the samples were dominated by three fractions: amorphous and poorly-crystalline and well crystallized hydrous oxides of Fe and Al; and residual phases, accounting for 90% of the total As pool. The geochemical behavior of sedimentary As in the Danshuei Estuary is strongly influenced by the redox potential and Fe oxides. The dissolved As concentrations in pore water correlated inversely with the redox potential. The sediment served as a source of dissolved As and the diffusion flux ranged from 0.047-0.35 μg cm-2 y-1. © 2015 Elsevier Ltd. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/86374
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| Appears in Collections: | 过去全球变化的重建
全球变化的国际研究计划
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作者单位: | Department of Marine Environmental Informaticst, National Taiwan Ocean University, Keelung City, Taiwan
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| Recommended Citation: | |
Fang T.-H.,Chen Y.-S.. Arsenic speciation and diffusion flux in Danshuei Estuary sediments, Northern Taiwan[J]. Marine Pollution Bulletin,2015-01-01,101(1)
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