DOI: 10.1016/j.marpolbul.2020.110912
论文题名: Nitrogen loss process in hypoxic seawater based on the culture experiment
作者: Tian D. ; Wang Y. ; Xing J. ; Sun Q. ; Song J. ; Li X.
刊名: Marine Pollution Bulletin
ISSN: 0025326X
出版年: 2020
卷: 152 语种: 英语
英文关键词: Dissolved inorganic nitrogen
; Hypoxic
; Simulated culture experiment
; Transformation
Scopus关键词: Denitrification
; Dissolution
; Nitrogen
; Nitrogen removal
; Seawater
; Wastewater treatment
; Dissimilatory nitrate reduction
; Dissolved inorganic nitrogens
; Dissolved oxygen concentrations
; Hypoxic
; Laboratory simulation
; Oceanic nitrogen
; Oxygen minimum zone
; Transformation
; Dissolved oxygen
; ammonia
; nitrogen
; sea water
; concentration (composition)
; dissolved inorganic nitrogen
; experimental study
; hypoxic conditions
; laboratory method
; seawater
; Article
; chemical parameters
; chemical phenomena
; concentration (parameter)
; controlled study
; denitrification
; mineralization
; nitrogen loss
; oxygen minimum zone
; reaction analysis
; sediment
英文摘要: The oxygen minimum zones (OMZs) and other hypoxic seawaters are considered as the main areas of oceanic nitrogen loss. The laboratory simulation culture was conducted to study the main reactions, rates and proportions of dissolved inorganic nitrogen (DIN) in different dissolved oxygen concentrations seawater, with aim of clarifying the process of nitrogen loss in hypoxic seawater. The results showed that the change of DIN in hypoxic water could be divided into three stages. In the first stage, the main reactions were the dissimilatory nitrate reduction to ammonium (DNRA) and denitrification. In the second stage, anammox and denitrification were main reactions. In the last stage, anammox was the most important nitrogen loss reaction; nitrogen loss eventually reached a relative balance with the input from sediment mineralization. Based on the data obtained from the last stage, the annual nitrogen loss could be estimated to be about 240–260 Tg in the global OMZs. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159108
Appears in Collections: 气候变化与战略
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作者单位: CAS Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Function Laboratory of Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
Recommended Citation:
Tian D.,Wang Y.,Xing J.,et al. Nitrogen loss process in hypoxic seawater based on the culture experiment[J]. Marine Pollution Bulletin,2020-01-01,152