DOI: 10.1016/j.marpolbul.2017.07.056
Scopus记录号: 2-s2.0-85026510929
论文题名: In situ, high-resolution DGT measurements of dissolved sulfide, iron and phosphorus in sediments of the East China Sea: Insights into phosphorus mobilization and microbial iron reduction
作者: Ma W.-W. ; Zhu M.-X. ; Yang G.-P. ; Li T.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 124, 期: 1 起始页码: 400
结束页码: 410
语种: 英语
英文关键词: DGT
; East China Sea
; Iron
; Marine sediment
; Phosphorus
; Sulfide
Scopus关键词: Carbon
; Dissolution
; Iron
; Organic carbon
; Oxic sediments
; Phosphorus
; Submarine geology
; Sulfur compounds
; Diffusive gradients in thin films
; Dissolved sulfide
; East China Sea
; Empirical estimations
; High resolution
; Marine sediments
; Sulfate reduction
; Sulfide
; Sediments
; iron
; organic carbon
; phosphorus
; sulfide
; concentration (composition)
; iron
; marine sediment
; mobilization
; organic carbon
; phosphorus
; sediment chemistry
; speciation (chemistry)
; sulfide
; anaerobic metabolism
; analytic method
; Article
; concentration (parameters)
; diffusive gradient in thin film technique
; East China Sea
; environmental monitoring
; eutrophication
; extraction
; mineralization
; oceanic regions
; oxidation
; salinity
; sediment
; sedimentation rate
; East China Sea
; Pacific Ocean
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Dissolved sulfide, iron (Fe), and phosphorus (P) concentrations in sediments of the East China Sea were simultaneously measured in situ by diffusive gradients in thin films (DGT) technique. The results, by combination with solid-phase Fe speciation, were used to characterize the interplays of Fe, S and P. Diverse distributions of dissolved sulfide among the sites are attributable to highly dynamic diagenetic regimes and varying availability of labile organic carbon (OC). The DGT technique provided high-resolution evidence for coexistence of microbial iron reduction (MIR) and sulfate reduction in localized zones, and for Fe-coupled P mobilization. Measured Fe2 +/P ratios suggest that Fe2 + reoxidatiion at the oxic zones can serve as an efficient scavenger of P. Empirical estimation indicates that MIR plays an important role in anaerobic OC mineralization in the sediments, which is a combined result of low availability of labile OC, high reactive Fe content, and unsteady diagenetic regimes. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87423
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
There are no files associated with this item.
作者单位: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, China
Recommended Citation:
Ma W.-W.,Zhu M.-X.,Yang G.-P.,et al. In situ, high-resolution DGT measurements of dissolved sulfide, iron and phosphorus in sediments of the East China Sea: Insights into phosphorus mobilization and microbial iron reduction[J]. Marine Pollution Bulletin,2017-01-01,124(1)