In-Situ Sensors for Monitoring the Chemistry of Hydrothermal Fluids: Experimental Calibration and Field Applications

用于监测热液化学性质的原位传感器：实验校准和现场应用

• 批准号: 0117117
• 负责人: William Seyfried
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0117117&HistoricalAwards=false
• 关键词: Situ; Sensors; Monitoring; Chemistry; Hydrothermal

This proposal is for the continuation of the development, calibration, testing, and deployment of in situ chemical sensors to make measurements at hydrothermal vents, especially instruments that can be left in place for long periods of monitoring, consistent with the evolving strategies involving long time series measurements. To now, successfully developed instruments measure H2, H2S, and pH. In this proposal the PIs propose to make these existing instruments smaller, more robust, and better suited for long deployments. In addition they propose to develop, calibrate and test new sensors to measure pH based on Ir/IrO2 and Ti/TiO2 materials, a new Na ion sensor made of NASICON ceramic (which can also serve as a reference electrode for pH measurements), and an electrochemical CO2 sensor. Developing successful instruments will require longer term testing and calibration and in situ testing at actual hydrothermal vents.

本提案是为了继续开发、校准、测试和部署在热液喷口进行测量的原位化学传感器，特别是那些可以长期监测的仪器，与涉及长时间序列测量的不断发展的策略相一致。到目前为止，成功开发的仪器可以测量H2、H2S和ph。在该提案中，pi建议将这些现有仪器变得更小、更坚固，更适合长期部署。此外，他们还提议开发、校准和测试新的传感器，以测量基于Ir/IrO2和Ti/TiO2材料的pH值，一种由NASICON陶瓷制成的新型Na离子传感器（也可以作为pH值测量的参考电极），以及一种电化学CO2传感器。研制成功的仪器将需要长期的测试和校准，并在实际的热液喷口进行现场测试。