Proposal for a Workshop: The Measurement of Dissolved Organic Carbon in Natural Waters
Proposal for a Workshop: The Measurement of Dissolved Organic Carbon in Natural Waters
批准号:
9103090
负责人:
John Hedges
金额:
$10.0万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-01-15 至 1993-06-30
中文摘要
一个名为“天然水中溶解有机碳的测量”的国际研讨会将于1991年春末召开,以批判性地比较目前可用于定量天然水中DOC的方法。具体地说,这次研讨会将讨论最近的证据,即高温催化氧化(HTCO)技术测量了天然水中DOC的主要成分,而传统的UV/过硫酸盐(UV/PP)方法没有对其进行量化。研讨会的主要目标将是:(1)确定HTCO与UV/P和其他方法测量DOC之间的一致趋势(基于现有数据和研讨会参与者分析的一小部分有代表性的样本的结果;(2)严格评估用于DOC分析的水样的收集、处理和保存程序;(3)确定DOC测量中一致差异的可能机制(因为它们涉及处理和分析方法);以及(4)为未来有关DOC准确量化问题的研究建议指南,以及正在进行的实地研究中DOC测量的临时程序。还将考虑对溶解有机氮进行类似的测量。
英文摘要
An international workshop, "The Measurement of Dissolved Organic Carbon in Natural Waters," will be convened in late spring of 1991 to critically compare currently available methods for the quantification of DOC in natural waters. Specifically, this workshop will address recent evidence that high-temperature catalytic oxidation (HTCO) techniques measure a major component of DOC in natural waters that is not quantified by conventional UV/persulfate (UV/PP methods. The main goals of the workshop will be to: (1) define consistent trends among DOC measurements by HTCO versus UV/P and other methods (based both on existing data and results for a small set of representative samples analyzed by workshop participants; (2) critically evaluate procedures for collecting, processing and preserving water samples for DOC analysis; (3) identify possible mechanisms for consistent differences in DOC measurements (as they relate both to handling and analytical methodology; and (4) recommend guidelines for future research on problems related to accurate DOC quantification as well as interim procedures for DOC measurements in ongoing field studies. Considerations will also be given to that analogous measurement of dissolved organic nitrogen.
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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:
Characterization of Dissolved Organic Matter in Seawater by Ultrafiltration and Major Biochemical Analysis
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批准号:9102150
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项目类别:Continuing Grant
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资助金额:$21.19万
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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:
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
-
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
-
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
-
资助金额:$18.38万
-
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