Sulfur Speciation and Cycling in Black Sea Waters

黑海水域中的硫形态和循环

• 批准号: 8613915
• 负责人: George Luther
• 金额: $ 4.45万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-01 至 1989-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8613915&HistoricalAwards=false
• 关键词: Sulfur; Speciation; Cycling; Black; Sea

The principal investigator of this research project has recently developed polarographic techniques to measure inorganic and organic sulfur species in marine porewaters. Included among these species are thiosulfate, sulfite, tetrathionate, bisulfide and polysulfide as S(-2), polysulfide as S(O), thiols and organic disulfides. His use of these methods for salt marsh porewaters has shown that there is cycling between organic and inorganic sulfur species via pyrite formation and its consequent oxidation. He expects similar processes may be occurring at the oxic/anoxic interface in the Black Sea. He proposes 1) to measure the above sulfur species and 2) to develop an understanding of their formation, cycling, and interactions with metals in Black Sea waters and porewaters. In order to accomplish this goal, his research efforts are being coordinated with 1) Drs. Landing and Jacobs who are proposing to study trace metal biogeochemistry and speciation, and 2) Drs. Jannasch and Mopper who are proposing to study microbiological processes and carbonyl formation respectively in the water column of the Black Sea.

该研究项目的首席研究员 最近开发的极谱技术， 无机和有机硫物种在海洋孔隙水。 这些物质包括硫代硫酸盐，亚硫酸盐， 连四硫酸盐、二硫化物和多硫化物作为S（-2）、多硫化物 如S（O）、硫醇和有机二硫化物。 他使用这些 盐沼孔隙水的方法表明， 有机硫和无机硫通过黄铁矿的循环 形成及其随后的氧化。 他预计类似 过程可能发生在好氧/缺氧界面， 黑海。 他建议1）测量上述硫物质，2） 了解它们的形成，循环， 与黑海沃茨和孔隙沃茨中金属的相互作用。 为了实现这一目标，他的研究工作是 与1）兰丁博士和雅各布斯博士协调， 建议开展痕量金属地球化学和形态研究， 和2）Jannasch博士和Mopper博士，他们打算研究 微生物过程和羰基形成 在黑海的水柱中。