Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region

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	Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region
	Yi, C. L.1; Boyle, J.2; Rose, N. L.3; Xie, P.4
刊名	JOURNAL OF COASTAL RESEARCH
	2006-12-01
卷号	3 页码:1412-1417
关键词	coatings aggregates pollutants
ISSN号	0749-0208
通讯作者	Yi, CL, Nanjing Univ, Dept Geog, Key Lab Coastal & Island Dev Educ Dept, Nanjing 210093, Peoples R China
中文摘要	Two types of microfabrics relating to pollutant adsorption were studied in the scanning electronic microscope (SEM) in a polluted, eutrophic lake, the Yangtze delta region. Agglutinational texture or the aggregates of small particles are composed of clay minerals and fine organic fragments among the silty grains and the coatings with a thickness about 1 mu m were on the surfaces of the silty grains in the sediments. The chemical constituents of the aggregates and the coatings are K, Na, Ca, Mg, Si, Al, O, Fe, Ti, C, N and P determined in X-ray energy spectrometry connected with the SEM. In some cases, Pb was detected in the aggregates in the top sediment. It is suggested that nutrients and metals are adsorbed to the aggregates, which were formed by electrostatic attraction of physicochemical floes. The coatings on the surface of quartz grains were formed by the interaction of dissociated Al, Si, Fe, etc from silicates with dissolved N, P and C nutrients in interstitial water, which was aroused by human pollution to the lake in recent two decades.
英文摘要	Two types of microfabrics relating to pollutant adsorption were studied in the scanning electronic microscope (SEM) in a polluted, eutrophic lake, the Yangtze delta region. Agglutinational texture or the aggregates of small particles are composed of clay minerals and fine organic fragments among the silty grains and the coatings with a thickness about 1 mu m were on the surfaces of the silty grains in the sediments. The chemical constituents of the aggregates and the coatings are K, Na, Ca, Mg, Si, Al, O, Fe, Ti, C, N and P determined in X-ray energy spectrometry connected with the SEM. In some cases, Pb was detected in the aggregates in the top sediment. It is suggested that nutrients and metals are adsorbed to the aggregates, which were formed by electrostatic attraction of physicochemical floes. The coatings on the surface of quartz grains were formed by the interaction of dissociated Al, Si, Fe, etc from silicates with dissolved N, P and C nutrients in interstitial water, which was aroused by human pollution to the lake in recent two decades.
学科主题	Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]	Environmental Sciences & Ecology ; Physical Geography ; Geology
关键词[WOS]	COASTAL-PLAIN ; METAL-IONS ; SORPTION ; CHINA ; COATINGS ; TAIHU ; IRON ; PHOSPHORUS ; EXTRACTION ; PARTICLES
收录类别	SCI
语种	英语
WOS记录号	WOS:000202961500036
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8752]
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.Nanjing Univ, Dept Geog, Key Lab Coastal & Island Dev Educ Dept, Nanjing 210093, Peoples R China 2.Univ Liverpool, Dept Geog, Liverpool L69 3BX, Merseyside, England 3.UCL, Environm Change Res Ctr, London WC1H 0AP, England 4.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430077, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Yi, C. L.,Boyle, J.,Rose, N. L.,et al. Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region[J]. JOURNAL OF COASTAL RESEARCH,2006,3:1412-1417.
APA	Yi, C. L.,Boyle, J.,Rose, N. L.,&Xie, P..(2006).Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region.JOURNAL OF COASTAL RESEARCH,3,1412-1417.
MLA	Yi, C. L.,et al."Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region".JOURNAL OF COASTAL RESEARCH 3(2006):1412-1417.