Sorptive interaction between goethite and strongly reducing organic substances from anaerobic decomposition of green manures

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 期刊论文

	Sorptive interaction between goethite and strongly reducing organic substances from anaerobic decomposition of green manures
	Li, Qingman 1; Ding, Yu 1,3; Zhang, Wen 1,3; Wang, Xingxiang 2; Ji, Guoliang 2; Zhou, Yiyong 1
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2008-12-01
卷号	40 期号:12 页码:2922-2927
关键词	Reducing organic substance Iron oxide Goethite Organic material Anaerobic decomposition Astragalus sinicus Vicia varia Reductive dissolution Anaerobic microorganism
ISSN号	0038-0717
通讯作者	Li, QM, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	Strongly reducing organic substances (SROS) and iron oxides exist widely in soils and sediments and have been implicated in many soil and sediment processes. In the present work, the sorptive interaction between goethite and SROS derived from anaerobic decomposition of green manures was investigated by differential pulse voltammetry (DPV). Both green manures, Astragaltus sinicus (Astragalus) and Vicia varia (Vicia) were chosen to be anaerobically decomposed by the mixed microorganisms isolated from paddy soils for 30 d to prepare different SROS. Goethite used in experiments was synthesized in laboratory. The anaerobic incubation solutions from green manures at different incubation time were arranged to react with goethite, in which SROS concentration and Fe(II) species were analyzed. The anaerobic decomposition of Astragalus generally produced SROS more in amount but weaker in reducibility than that of Vicia in the same incubation time. The available SROS from Astragalus that could interact with goethite was 0.69 +/- 0.04, 0.84 +/- 0.04 and 1.09 +/- 0.03 cmol kg(-1) as incubated for 10, 15 and 30 d, respectively, for Vicia, it was 0.12 +/- 0.03, 0.46 +/- 0.02 and 0.70 +/- 0.02 cmol kg(-1). One of the fates of SROS as they interacted with goethite was oxidation. The amounts of oxidizable SROS from Astragalus decreased over increasing incubation time from 0.51 +/- 0.05 cmol kg(-1) at day 10 to 0.39 +/- 0.04 cmol kg(-1) at day 30, but for Vicia, it increased with the highest reaching to 0.58 +/- 0.04 cmol kg(-1) at day 30. Another fate of these substances was sorption by goethite. The SROS from Astragalus were sorbed more readily than those from Vicia, and closely depended upon the incubation time, whereas for those from Vicia, the corresponding values were remarkably less and apparently unchangeable with incubation time. The extent of goethite dissolution induced by the anaerobic solution from Vicia was greater than that from Astragalus, showing its higher reactivity. (c) 2008 Published by Elsevier Ltd.
英文摘要	Strongly reducing organic substances (SROS) and iron oxides exist widely in soils and sediments and have been implicated in many soil and sediment processes. In the present work, the sorptive interaction between goethite and SROS derived from anaerobic decomposition of green manures was investigated by differential pulse voltammetry (DPV). Both green manures, Astragaltus sinicus (Astragalus) and Vicia varia (Vicia) were chosen to be anaerobically decomposed by the mixed microorganisms isolated from paddy soils for 30 d to prepare different SROS. Goethite used in experiments was synthesized in laboratory. The anaerobic incubation solutions from green manures at different incubation time were arranged to react with goethite, in which SROS concentration and Fe(II) species were analyzed. The anaerobic decomposition of Astragalus generally produced SROS more in amount but weaker in reducibility than that of Vicia in the same incubation time. The available SROS from Astragalus that could interact with goethite was 0.69 +/- 0.04, 0.84 +/- 0.04 and 1.09 +/- 0.03 cmol kg(-1) as incubated for 10, 15 and 30 d, respectively, for Vicia, it was 0.12 +/- 0.03, 0.46 +/- 0.02 and 0.70 +/- 0.02 cmol kg(-1). One of the fates of SROS as they interacted with goethite was oxidation. The amounts of oxidizable SROS from Astragalus decreased over increasing incubation time from 0.51 +/- 0.05 cmol kg(-1) at day 10 to 0.39 +/- 0.04 cmol kg(-1) at day 30, but for Vicia, it increased with the highest reaching to 0.58 +/- 0.04 cmol kg(-1) at day 30. Another fate of these substances was sorption by goethite. The SROS from Astragalus were sorbed more readily than those from Vicia, and closely depended upon the incubation time, whereas for those from Vicia, the corresponding values were remarkably less and apparently unchangeable with incubation time. The extent of goethite dissolution induced by the anaerobic solution from Vicia was greater than that from Astragalus, showing its higher reactivity. (c) 2008 Published by Elsevier Ltd.
学科主题	Soil Science
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Soil Science
研究领域[WOS]	Agriculture
关键词[WOS]	CRYSTALLINE IRON(III) OXIDES ; REDUCTIVE DISSOLUTION ; DISSIMILATORY REDUCTION ; ELECTRON-ACCEPTORS ; HUMIC SUBSTANCES ; FERROUS IRON ; PHOSPHORUS ; SEDIMENT ; HEMATITE ; ENVIRONMENTS
收录类别	SCI
资助信息	National Natural Science Foundation of China [40401029]; Natural Sophisticated Technology Plan of China [2005AA60101005-03]
语种	英语
WOS记录号	WOS:000261524900002
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/7940]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
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 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Qingman,Ding, Yu,Zhang, Wen,et al. Sorptive interaction between goethite and strongly reducing organic substances from anaerobic decomposition of green manures[J]. SOIL BIOLOGY & BIOCHEMISTRY,2008,40(12):2922-2927.
APA	Li, Qingman,Ding, Yu,Zhang, Wen,Wang, Xingxiang,Ji, Guoliang,&Zhou, Yiyong.(2008).Sorptive interaction between goethite and strongly reducing organic substances from anaerobic decomposition of green manures.SOIL BIOLOGY & BIOCHEMISTRY,40(12),2922-2927.
MLA	Li, Qingman,et al."Sorptive interaction between goethite and strongly reducing organic substances from anaerobic decomposition of green manures".SOIL BIOLOGY & BIOCHEMISTRY 40.12(2008):2922-2927.