Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Major Biochemical Analysis
Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Major Biochemical Analysis
批准号:
9102150
负责人:
John Hedges
金额:
$21.19万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-05-15 至 1994-10-31
中文摘要
将研究溶解有机物的组成, 利用超滤作为一种手段, 分离出一个更大,更少改变,更有代表性的 比疏水吸附可能的分数 技术. DOM分离株将通过CP/MAS进行表征 ~(13)CNMR及元素和主要生化分析 组成,这应该是一个全面的 评估其主要结构特征。 选择 将进行额外的实验以阐明 生物来源、环境反应性和分析 这份材料的责任。
英文摘要
Studies will be made of the composition of Dissolved Organic Mater (DOM) in seawater using ultrafiltration as a means of isolating a larger, less altered, and more representative fraction than has been possible with hydrophobic adsorption techniques. The DOM isolates will be characterized by CP/MAS 13CNMR and analyses of elemental and major biochemical composition, which together should give a comprehensive assessment of their major structural features. Selected additional experiments will be carried out to elucidate the biological sources, environmental reactivities and analytical accountability of this material.
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会议论文
Mechanisms of Organic Matter Preservation in Marine Sediments: A Focus on Oxygen Sensitive Organic Matter
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批准号:9711690
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项目类别:Continuing Grant
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资助金额:$55.5万
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财政年份:1997
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负责人:John Hedges
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依托单位:
Organic Geochemical Studies in the Southern Ocean
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批准号:9531763
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项目类别:Continuing Grant
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资助金额:$29.3万
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财政年份:1996
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负责人:John Hedges
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依托单位:
Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Chemical Analysis
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批准号:9402361
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项目类别:Continuing Grant
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资助金额:$24.71万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Collaborative Research: Organic Geochemical Studies In The Arabian Sea
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批准号:9310684
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项目类别:Continuing Grant
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资助金额:$39.01万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Distribution, Forms, and Reactions of Major Biochemicals in Marine Environments
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批准号:9401903
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项目类别:Continuing Grant
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资助金额:$82.91万
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财政年份:1994
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负责人:John Hedges
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依托单位:
Organic Geochemical Flux Studies in the Equatorial Pacific Using Swimmer Excluding Rotator Traps
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批准号:9022319
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项目类别:Continuing Grant
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资助金额:$34.58万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Major Biochemical Forms and Distribution Among Marine Sedimentary Particles and Vascular Plant Tissues
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批准号:9101908
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项目类别:Continuing Grant
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资助金额:$66.76万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Proposal for a Workshop: The Measurement of Dissolved Organic Carbon in Natural Waters
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批准号:9103090
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项目类别:Standard Grant
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资助金额:$10.0万
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财政年份:1991
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负责人:John Hedges
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依托单位:
Application of Additional CuO Reaction Products as Geochemical Indicators
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批准号:9007873
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项目类别:Continuing Grant
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资助金额:$14.38万
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财政年份:1990
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负责人:John Hedges
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依托单位:
Field Testing of a New IRS Sediment Trap Designed to ExcludeSwimmers
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批准号:9015914
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项目类别:Standard Grant
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资助金额:$8.7万
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财政年份:1990
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负责人:John Hedges
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依托单位:
Comparative Geochemistries of the Major Biochemicals in Marine Environments
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批准号:8716481
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项目类别:Continuing Grant
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资助金额:$54.98万
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财政年份:1988
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负责人:John Hedges
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依托单位:
The Effectiveness of Poisons and Preservatives on Preventing the Decomposition of Organic Matter Collected in Sediments Traps
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批准号:8711016
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项目类别:Continuing Grant
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资助金额:$27.67万
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财政年份:1987
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负责人:John Hedges
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依托单位:
A Search for New Biomarkers Among the Nonlignin CuO ReactionProducts of Natural Materials
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批准号:8613868
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项目类别:Continuing Grant
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资助金额:$14.9万
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财政年份:1986
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负责人:John Hedges
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依托单位:
Geochemistry of Lignins, Carbohydrates and Humic Substances in Marine Environments
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批准号:8421023
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项目类别:Continuing Grant
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资助金额:$48.17万
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财政年份:1985
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负责人:John Hedges
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依托单位:
Electron Spin Resonance (Esr) Studies of Chemical SpeciationIn Ionic Solutions Like Sea Water From 20-300'c and 1-100 Atm
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批准号:8406587
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项目类别:Continuing Grant
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资助金额:$20.1万
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财政年份:1984
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负责人:John Hedges
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依托单位:
Geochemistry of Humic Substances in Recent Marine Sediments
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批准号:8219294
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项目类别:Continuing Grant
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资助金额:$22.99万
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财政年份:1983
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负责人:John Hedges
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依托单位:
Geochemistry of Humic Substances in Recent Marine Sediments
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批准号:8023970
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项目类别:Continuing Grant
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资助金额:$18.38万
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财政年份:1981
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负责人:John Hedges
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依托单位:
A Test of the Melanoidin Hypothesis By Degradative Structural Analysis
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批准号:7818260
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项目类别:Continuing Grant
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资助金额:$9.86万
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财政年份:1978
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负责人:John Hedges
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依托单位:
海外基金