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学科主题: Environmental Sciences; Geosciences, Multidisciplinary
题名: Reducing organic substances from anaerobic decomposition of hydrophytes
作者: Zhang, Wen1, 3; Li, Qingman1; Wang, Xingxiang2; Ding, Yu1, 3; Sun, Jingxian1, 3
通讯作者: Li, QM, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Anaerobic decomposition ; Anaerobic microbe ; Hydrophytes ; Reducing organic substance ; Voltammetry
刊名: BIOGEOCHEMISTRY
发表日期: 2009-05-01
DOI: 10.1007/s10533-009-9295-y
卷: 94, 期:1, 页:1-11
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Wen; Li, Qingman; Ding, Yu; Sun, Jingxian] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Wang, Xingxiang] Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China; [Zhang, Wen; Ding, Yu; Sun, Jingxian] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: National Natural Science Foundation of China [40401029]; Natural Sophisticated Technology Plan of China [2005AA60101005-03]; Key Technology Research and Development Program of Jiangsu, China [BE2008691]
类目[WOS]: Environmental Sciences ; Geosciences, Multidisciplinary
研究领域[WOS]: Environmental Sciences & Ecology ; Geology
摘要: Oxidation-reduction properties of surface sediments are tightly associated with the geochemistry of substances, and reducing organic substances (ROS) from hydrophytes residues may play an important role in these processes. In this study, composition, dynamics, and properties of ROS from anaerobic decomposition of Eichhornia crassipes (Mart.) Solms, Potamogenton crispus Linn, Vallisneria natans (Lour.) Hara, Lemna trisulca Linn and Microcystis flos-aquae (Wittr) Kirch were investigated using differential pulse voltammetry (DPV). The type of hydrophytes determined both the reducibility and composition of ROS. At the peak time of ROS production, the anaerobic decomposition of M. flos-aquae produced 6 types of ROS, among which 3 belonged to strongly reducing organic substance (SROS), whereas there were only 3-4 types of ROS from the other hydrophytes, 2 of them exhibiting strong reducibility. The order of potential of hydrophytes to produce ROS was estimated to be: M. flos-aquae > E. crassipes > L. trisulca > P. crispus approximate to V. natans, based on the summation of SROS and weakly reducing organic substances (WROS). The dynamic pattern of SROS production was greatly different from WROS. The total SROS appeared periodic fluctuation with reducibility gradually weakening with incubation time, whereas the total WROS increased with incubation time. Reducibility of ROS from hydrophytes was readily affected by acid, base and ligands, suggesting that their properties were related to these aspects. In addition to the reducibility, we believe that more attention should be paid to the other behaviors of ROS in surface sediments.
英文摘要: Oxidation-reduction properties of surface sediments are tightly associated with the geochemistry of substances, and reducing organic substances (ROS) from hydrophytes residues may play an important role in these processes. In this study, composition, dynamics, and properties of ROS from anaerobic decomposition of Eichhornia crassipes (Mart.) Solms, Potamogenton crispus Linn, Vallisneria natans (Lour.) Hara, Lemna trisulca Linn and Microcystis flos-aquae (Wittr) Kirch were investigated using differential pulse voltammetry (DPV). The type of hydrophytes determined both the reducibility and composition of ROS. At the peak time of ROS production, the anaerobic decomposition of M. flos-aquae produced 6 types of ROS, among which 3 belonged to strongly reducing organic substance (SROS), whereas there were only 3-4 types of ROS from the other hydrophytes, 2 of them exhibiting strong reducibility. The order of potential of hydrophytes to produce ROS was estimated to be: M. flos-aquae > E. crassipes > L. trisulca > P. crispus approximate to V. natans, based on the summation of SROS and weakly reducing organic substances (WROS). The dynamic pattern of SROS production was greatly different from WROS. The total SROS appeared periodic fluctuation with reducibility gradually weakening with incubation time, whereas the total WROS increased with incubation time. Reducibility of ROS from hydrophytes was readily affected by acid, base and ligands, suggesting that their properties were related to these aspects. In addition to the reducibility, we believe that more attention should be paid to the other behaviors of ROS in surface sediments.
关键词[WOS]: HUMIC SUBSTANCES ; REDUCTION ; SEDIMENTS ; PHOSPHORUS ; NUTRIENTS ; MANGANESE ; SORPTION ; RELEASE ; MATTER ; CARBON
语种: 英语
WOS记录号: WOS:000266733200001
ISSN号: 0168-2563
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7722
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhang, Wen; Li, Qingman; Wang, Xingxiang; Ding, Yu; Sun, Jingxian.Reducing organic substances from anaerobic decomposition of hydrophytes,BIOGEOCHEMISTRY,2009,94(1):1-11
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