Stability and Reactivity of Metastable Sulfur Oxyanions in Hydrothermal Solutions

水热溶液中亚稳态硫氧阴离子的稳定性和反应性

• 批准号: 9116846
• 负责人: Martin Schoonen
• 金额: $ 7.23万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9116846&HistoricalAwards=false
• 关键词: Stability; Reactivity; Metastable; Sulfur; Oxyanions

The objectives of this study are: (1) to investigate experimentally how thiosulfate and polythionates form through sulfur-water interaction (T100oC), (2) to determine experimentally the thermal stabilities of thiosulfate and polythionates, (3) to determine experimentally the catalytic effects of mineral surfaces (pyrite and quartz) and trace levels of Fe2+(aq) on (1) and (2), and (4) to determine the sulfur speciation in several sulfur-rich hot springs in Yellowstone National Park in situ. Objectives are achieved through a combination of experimental work in the hydrothermal laboratory and field work in collaboration with the U.S.G.S. Ion Chromatographic techniques will be used for the in situ analysis of sulfur species, the PI will again collaborate with Kirk Nordstrom, and use a mobile, U.S.G.S. laboratory equipped with an IC identical to the one in the PI's lab. The results of these experiments will be used to identify natural hydrothermal solutions that could contain sulfur oxyanions in significant concentrations.

本研究的目的是：（1）调查 实验上硫代硫酸盐和连多硫酸盐是如何通过 硫-水相互作用（T100 ℃），（2）通过实验确定 硫代硫酸盐和连多硫酸盐的热稳定性，（3）至 通过实验确定矿物表面的催化作用 （黄铁矿和石英）和（1）和（2）上的痕量Fe 2+（aq）， （4）测定了几种富硫土壤中硫的形态 温泉在黄石国家公园原地。 目标是 通过结合实验工作， 热液实验室和实地工作， 美国地质调查局 离子色谱技术将用于 硫物种的原位分析，PI将再次与 柯克·诺德斯特龙，用移动的，美国地质调查局的。实验室配备有 一个和私家侦探实验室里一模一样的IC 的结果予以 实验将用于识别天然热液 可能含有硫氧阴离子的溶液， 浓度的