globalchange  > 气候变化与战略
DOI: 10.1029/2018GB006165
论文题名:
Dicarboxylic and Oxocarboxylic Acids in the Arctic Coastal Ocean (Beaufort Sea-Mackenzie Margin)
作者: Sempéré R.; Vaïtilingom M.; Charrière B.; Kawamura K.; Panagiotopoulos C.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期:7
语种: 英语
英文关键词: anthropogenic effect ; carbon cycle ; carboxylic acid ; concentration (composition) ; decarboxylation ; dissolved organic carbon ; global warming ; molecular analysis ; organic matter ; oxalic acid ; oxidation ; photochemistry ; Arctic Ocean ; Beaufort Sea ; Canada ; Mackenzie River [Northwest Territories] ; Northwest Territories
学科: anthropogenic signatures ; Arctic Ocean ; bifunctional carboxylic acids ; Mackenzie River ; organic matter
中文摘要: The distribution of bifunctional carboxylic acids (BCAs) is largely reported as primary or secondary organic aerosols. However, sparse studies describe the distribution of these organic compounds in fluvial and marine environments. In the context of a global warming, we present the first results of a study of the distribution of BCAs in a surface Arctic coastal area near the mouth of the Mackenzie River. These results showed that the Beaufort Sea is an area with elevated BCA content among which glyoxylic acid is predominant, in contrast to low concentrations and predominance of oxalic acid in aerosols reported elsewhere. The carbon fraction of BCAs represents 1.8% to 4.5% of dissolved organic carbon pool in Arctic Ocean. This study reinforces the hypothesis that aquatic biological processes govern the molecular distribution of BCA in marine/river waters, whereas photochemical oxidation reactions regulate their molecular distribution in rain and aerosols. Our results indicate that the Mackenzie River is an important source of BCAs in the Arctic Ocean during July–October period, with a first estimate of 35 × 103 tons of BCAs including 12 × 103 tons of diacids and 23 × 103 tons of oxoacids. ©2019. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:2   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160155
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作者单位: Aix-Marseille Université, Mediterranean Institute of Oceanography (MIO),Université de Toulon, CNRS, IRD UM 110, Marseille, France; Université des Antilles, Laboratoire de Recherche en Géosciences et Energies (LaRGE), Pointe-à-Pitre, EA 4539, France; Université de Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR 5110, Perpignan, France; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Chubu Institute for Advanced Studies, Chubu University, Kasugai, Japan

Recommended Citation:
Sempéré R.,Vaïtilingom M.,Charrière B.,et al. Dicarboxylic and Oxocarboxylic Acids in the Arctic Coastal Ocean (Beaufort Sea-Mackenzie Margin)[J]. Global Biogeochemical Cycles,2019-01-01,33(7)
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