Dissolved Organic Sulfur in Seawater: Determination and Biogeochemical Cycling
海水中溶解的有机硫:测定和生物地球化学循环
基本信息
- 批准号:9521628
- 负责人:
- 金额:$ 20.93万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1995
- 资助国家:美国
- 起止时间:1995-11-01 至 1998-10-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9521628 Cutter The photolysis of dissolved organic sulfur (DOS) compounds in seawater is a principle source of the radiatively important gas carbonyl sulfur cycle and may be involved in trace metal complexation since many organic sulfur compounds are strong ligands. However, no suitable means for the detection of DOS in seawater exists. Therefore, the overall goal for this work is to adapt an existing reductive pyrolysis method for the determination of DOS in seawater (combustion in a hydrogen atmosphere to hydrogen sulfide and then gas chromatography-flame photometric detection) and to apply it to an initial study of DOS cycling. Specific objectives for this project are: (1) to evaluate the accuracy, precision, detection limits, and linearity of the method; (2) to test the method in the field and develop appropriate sample storage procedures; and (3) to obtain DOS data for estuarine, coastal, and open ocean waters as an initial survey of its biogeochemical behavior. Work on this last objective will be in conjunction with other studies of carbonyl sulfide, DOC and DON, and trace metal complexation in order to allow the formulation of specific hypotheses on DOS biochemistry.
海水中溶解的有机硫(DOS)化合物的光解是辐射重要气体羰基硫循环的主要来源,并且由于许多有机硫化合物是强配体,因此可能涉及微量金属络合。然而,目前还没有合适的方法来检测海水中的DOS。因此,本工作的总体目标是采用现有的还原热解法(在氢气气氛中燃烧生成硫化氢,然后气相色谱-火焰光度法检测)来测定海水中的DOS,并将其应用于DOS循环的初步研究。该项目的具体目标是:(1)评价该方法的准确度、精密度、检出限和线性度;(2)实地检验方法,制定相应的样品保存程序;(3)获取河口、沿海和开阔海域的DOS数据,作为其生物地球化学行为的初步调查。最后一个目标的工作将与羰基硫化物、DOC和DON以及痕量金属络合的其他研究结合起来,以便对DOS生物化学提出具体的假设。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Gregory Cutter其他文献
Gregory Cutter的其他文献
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{{ truncateString('Gregory Cutter', 18)}}的其他基金
Old Dominion University/Synthetic Conducting Cable for Trace Metal-clean Sampling Winch SSSE
旧道明大学/用于微量金属清洁采样绞车 SSSE 的合成导电电缆
- 批准号:
2118915 - 财政年份:2021
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
US GEOTRACES GP17-OCE: Hydrogen sulfide as a strong ligand affecting the speciation and solubility of key trace metals
US GEOTRACES GP17-OCE:硫化氢作为强配体影响关键痕量金属的形态和溶解度
- 批准号:
2049564 - 财政年份:2021
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
Collaborative Research: Management and Implementation of US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)
合作研究:美国GEOTRACES GP17部分的管理和实施:南太平洋和南大洋(GP17-OCE)
- 批准号:
2023315 - 财政年份:2020
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
Collaborative Research: Management and Implementation of US GEOTRACES Pacific Meridional Transect
合作研究:美国GEOTRACES太平洋经向断面的管理和实施
- 批准号:
1658318 - 财政年份:2017
- 资助金额:
$ 20.93万 - 项目类别:
Continuing Grant
US GEOTRACES PMT: hydrogen sulfide as a strong ligand affecting trace metal cycling
US GEOTRACES PMT:硫化氢作为影响痕量金属循环的强配体
- 批准号:
1737342 - 财政年份:2017
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
GEOTRACES Arctic Section: Processes affecting the biogeochemical cycling of essential and toxic metalloids in the Arctic Ocean
GEOTRACES 北极部分:影响北冰洋必需和有毒类金属生物地球化学循环的过程
- 批准号:
1435708 - 财政年份:2015
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
Collaborative Research: Management and Implementation of the US Arctic GEOTRACES Study
合作研究:美国北极GEOTRACES研究的管理和实施
- 批准号:
1355913 - 财政年份:2014
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
Collaborative Research: Management and Implementation of US GEOTRACES Eastern Pacific Zonal Transect
合作研究:美国GEOTRACES东太平洋地带样带的管理和实施
- 批准号:
1130245 - 财政年份:2012
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
US GEOTRACES Pacific section: Characterizing the redox environment of the eastern tropical Pacific Ocean
US GEOTRACES 太平洋部分:描述东热带太平洋的氧化还原环境
- 批准号:
1235328 - 财政年份:2012
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
GEOTRACES Zonal Atlantic Section: Arsenic and phosphorus biogeochemistry
GEOTRACES 大西洋分区:砷和磷生物地球化学
- 批准号:
0929537 - 财政年份:2010
- 资助金额:
$ 20.93万 - 项目类别:
Standard Grant
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