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首页> 外文会议>OCEANS 2011 IEEE - Spain >In situ Raman probe for quantitative observation of sediment pore waters in the Deep Ocean — Development and applications
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In situ Raman probe for quantitative observation of sediment pore waters in the Deep Ocean — Development and applications

机译：定量观察深海沉积物孔隙水的原位拉曼探针—开发与应用

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Using the well developed Deep Ocean Raman In Situ Spectrometer (DORISS), we have developed an in situ deep-sea marine sediment pore water probe for geochemical studies. This novel device allows detailed measurement of pore water profiles. Our particular interest is in dissolved CH4, SO4=, H2S, and pH in situ without incurring artifacts due to the degassing that typically occurs with core recovery. A second generation DORISS instrument was developed at the Monterey Bay Aquarium Research Institute (MBARI) by engineering and science staff in 2005. The instrument is a plugin module for either of remotely operated vehicle (ROV) platforms at MBARI. DORISS has successfully performed in situ measurements on targets of scientific interest including high-temperature hydrothermal vent fluids, complex gas hydrates, and numerous other targets. Previously Raman techniques had been avoided to analyze sediment pore water geochemistry because of experience with the pore-waters strongly fluorescing. Simple experiments conducted with extracted pore-waters had previously demonstrated that fluorescence overwhelmed the relatively weak laser Raman signal. The in situ Raman pore water probe has worked around the fluorescence problem. The Raman pore water probe has been deployed a number of times at gas hydrate sites such as Hydrate Ridge, Barkley Canyon, and in the Santa Monica basin over the last two years. This paper will discuss the technique details and the exploration of expanding these same techniques into longer probes and looking at other difficult to obtain chemistries.
机译：使用发达的深海拉曼原位光谱仪（DORISS），我们开发了用于地球化学研究的原位深海海洋沉积物孔隙水探头。这种新颖的设备可以对孔隙水剖面进行详细测量。我们特别感兴趣的是原位溶解CH 4 ，SO 4 = ，H 2 S和pH由于岩心回收过程中通常会发生脱气，因此会产生伪影。工程和科学人员于2005年在蒙特利湾水族馆研究所（MBARI）开发了第二代DORISS仪器。该仪器是MBARI的任一远程操作（ROV）平台的插件模块。 DORISS已成功地对科学感兴趣的目标进行了现场测量，这些目标包括高温热液排放流体，复杂的天然气水合物以及许多其他目标。由于孔隙水强烈发荧光的经验，以前避免使用拉曼技术来分析沉积物孔隙水的地球化学。以前用提取的孔隙水进行的简单实验已经证明，荧光使相对较弱的激光拉曼信号不堪重负。原位拉曼孔隙水探针已解决了荧光问题。在过去两年中，拉曼孔隙水探头已在天然气水合物站点（如水合物岭，巴克利峡谷和圣莫尼卡盆地）进行了多次部署。本文将讨论技术细节，以及将这些相同技术扩展到更长的探针中并探索其他难以获得的化学方法的探索。

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