DOI: 10.1029/2012GB004317
Scopus记录号: 2-s2.0-84880696134
论文题名: Deposition fluxes and fate of polycyclic aromatic hydrocarbons in the Yangtze River estuarine-inner shelf in the East China Sea
作者: Lin T ; , Hu L ; , Guo Z ; , Zhang G ; , Yang Z
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 1 起始页码: 77
结束页码: 87
语种: 英语
英文关键词: deposition flux
; East Asian monsoon-driven re-suspension and transport
; East China Sea
; fate
; PAHs
; Yangtze River estuarine-inner shelf
Scopus关键词: Deposition fluxes
; East China Sea
; fate
; PAHs
; Re-suspension
; Yangtze River
; Deposition
; Polycyclic aromatic hydrocarbons
; Principal component analysis
; Sediments
; Estuaries
; atmospheric deposition
; flux measurement
; marine sediment
; mass transfer
; molecular analysis
; PAH
; principal component analysis
; sediment chemistry
; surficial sediment
; China
; East China Sea
; Pacific Ocean
; Yangtze River
英文摘要: Surface sediments were obtained from a matrix of 76 sample sites in the inner shelf mud belts of the East China Sea (ECS) for a comprehensive study of the distribution, composition, deposition flux, and fate of polycyclic aromatic hydrocarbons (PAHs). The sampling sites covered an area of ~80,000 km 2 extending ~1000 km from the mouth of the Yangtze River to the Min River in the inner shelf. The total deposition flux of the 16 USEPA priority PAHs (16 PAHs) of the Yangtze estuarine-inner shelf was estimated to be 152 t/yr, accounting for ~38% of the total annual input of the 16 PAHs into the ECS. This indicates that the Yangtze estuarine-inner shelf is one of the largest sinks of land-based PAHs in the world. Principal component analysis indicated that the 16 PAHs in the northern Yangtze estuarine mud area were mostly phenanthrene while shifting to high-molecular-weight PAHs in the southern Min-Zhe coastal mud area. The positive matrix factorization model revealed that the deposition flux of low-molecular-weight (LMW) PAHs decreased from north to south, most likely due to the mass transfer between the resuspended sediments triggered by the East Asian monsoon and the water columns, as the resuspended sediments are transported southward. This release of LMW PAHs from the sediments to the water columns could become an important secondary PAH source in ECS. ©2012. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77626
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, China; College of Marine Geosciences, Ocean University of China, Qingdao, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
Recommended Citation:
Lin T,, Hu L,, Guo Z,et al. Deposition fluxes and fate of polycyclic aromatic hydrocarbons in the Yangtze River estuarine-inner shelf in the East China Sea[J]. Global Biogeochemical Cycles,2013-01-01,27(1)