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学科主题: Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary
题名: Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region
作者: Yi, C. L.1; Boyle, J.2; Rose, N. L.3; Xie, P.4
通讯作者: Yi, CL, Nanjing Univ, Dept Geog, Key Lab Coastal & Island Dev Educ Dept, Nanjing 210093, Peoples R China
关键词: coatings ; aggregates ; pollutants
刊名: JOURNAL OF COASTAL RESEARCH
发表日期: 2006-12-01
卷: 3, 页:1412-1417
收录类别: SCI
文章类型: Article
部门归属: [Yi, C. L.] Nanjing Univ, Dept Geog, Key Lab Coastal & Island Dev Educ Dept, Nanjing 210093, Peoples R China; [Boyle, J.] Univ Liverpool, Dept Geog, Liverpool L69 3BX, Merseyside, England; [Rose, N. L.] UCL, Environm Change Res Ctr, London WC1H 0AP, England; [Xie, P.] CAS, Inst Hydrobiol, Wuhan 430077, Hubei, Peoples R China
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
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.
关键词[WOS]: COASTAL-PLAIN ; METAL-IONS ; SORPTION ; CHINA ; COATINGS ; TAIHU ; IRON ; PHOSPHORUS ; EXTRACTION ; PARTICLES
语种: 英语
WOS记录号: WOS:000202961500036
ISSN号: 0749-0208
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8752
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.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

Recommended Citation:
Yi, C. L.; Boyle, J.; Rose, N. L.; Xie, P..Microfabries of lacustrine sediments to pollutant adsorption from a polluted Eutrophic lake, the Yangtze delta region,JOURNAL OF COASTAL RESEARCH,2006,3():1412-1417
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