Development of High-Pressure Environmental Chamber

高压环境舱的研制

• 批准号: 0929312
• 负责人: Stephen Guggenheim
• 金额: $ 8.51万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0929312&HistoricalAwards=false
• 关键词: Development; Pressure; Environmental; Chamber

0929312GuggenheimThis award provides funding of $85,141 over 12 months to develop a high pressure cell which will allow real-time XRD studies simulating the environment of the ocean floor. The chamber will allow high temperature (200 °C) operation simulating hydrothermal regions. The cell will thus allow analyzing the effects of vent gases such as methane, carbon dioxide, and oxygen on mineral dynamics and solid phases in suspension will also be able to be analyzed. The cell will have injection and extraction valves so that samples can be manipulation and temporally sub-sampled. A mixing pump will be fitted in-line to keep suspensions mixed and solutes in equilibrium. The specialized cell will allow studying mineral interactions at temperatures and pressures previously unobtainable. Targeted environments will be black- and white-smoker hydrothermal systems and methane-bearing benthic systems. The cell will be critical for understanding authigenic mineral formation, especially dolomite. Other research foci include clay mineralogy and biologically-enhanced illitization. In other clay mineralogy studies, the cell will be used to assay the function of salinity, temperature and pressure on biological material-clay interactions. Salinity, temperature and pressure effects will also be assayed in relation to sedimentation, methane and carbon dioxide content and sequestration, and mineral-brine interactions. The cell will also be used better understand continentally-derived material alteration in marine sedimentary basins. The new system will be critical for studying deep-ocean biogeochemistry and will help provide an experimental platform for studying hydrothermal and basin systems. A graduate and undergraduate student will be supported from this award. Student focus will be on instrument development and testing. ***

0929312古根海姆该奖项在 12 个月内提供 85,141 美元的资金，用于开发高压单元，该单元将允许进行模拟海底环境的实时 XRD 研究。该室将允许模拟热液区域的高温（200°C）操作。因此，可以分析排出气体（例如甲烷、二氧化碳和氧气）对悬浮液中的矿物动力学和固相的影响。将配备注射阀和提取阀，以便对样品进行操作并进行临时二次采样，并将安装在线混合泵，以保持悬浮液混合和溶质平衡，该专用单元将允许在以前无法获得的温度和压力下研究矿物相互作用。目标环境将是黑烟和白烟热液系统和含甲烷的底栖系统。该电池对于了解自生矿物的形成至关重要，特别是白云石。其他研究重点包括粘土。在其他粘土矿物学研究中，该细胞将用于测定盐度、温度和压力对生物材料-粘土相互作用的作用，还将测定盐度、温度和压力与沉积的关系。该单元还将用于更好地了解海洋沉积盆地中大陆来源的物质变化。深海生物地球化学，并将帮助提供研究热液和盆地系统的实验平台。该奖项将支持研究生和本科生的重点是仪器开发和测试。