SGER: Chemical Sensors for Seafloor Hydrothermal Systems

[0084946 . hollowy]这个探索性研究（SGER）项目将开发和测试两种光纤化学传感器，用于监测海底热液系统环境中的热液流体-海水混合物的化学成分以及这些环境的实验室模拟器。拉曼光谱使用光纤作为光路进出样品是已知的工作很好地定量确定各种有机和无机物种在水溶液中。此外，一种相对较新的技术，表面等离子体共振（SPR）光谱作为一种简单的监测流体密度的方法，具有很大的前景。这项工作将评估每一种技术（拉曼光谱和SPR光谱）用于海底热液流体的短期和长期监测的功效。如果在热液条件下被证明可以工作，这些设备可以用于载人或ROV潜水，作为电缆海底观测站和实验室反应堆的节点。

0084946HollowayThis Small Grants for Exploratory Research (SGER) project will develop and test two kinds of fiber optic chemical sensors for use in monitoring the chemistry of hydrothermal fluid -- seawater mixtures in seafloor hydrothermal system environments and in laboratory simulators of those environments. Raman spectroscopy using optical fibers as the light path to and from samples is known to work well to quantitatively determine a variety of organic and inorganic species in aqueous solution. In addition, a relatively new technique, Surface Plasmon Resonance (SPR) spectroscopy holds great promise as a simple means of monitoring fluid densities. This work will evaluate the efficacy of each of these techniques (Raman and SPR spectroscopies) for use as short, and long-term monitors of seafloor hydrothermal fluids. If proven to operate under hydrothermal conditions, these devices could be used on manned or ROV dives, as nodes in cabled seafloor observatories and in laboratory reactors.