Analysis of Chemical Signals from Complex Oceanic Gas Hydrate Ecosystems with Infrared Spectroscopy

Analysis of Chemical Signals from Complex Oceanic Gas Hydrate Ecosystems with Infrared Spectroscopy

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The first fundamental principles and data evaluation strategies for monitoring and quantifying gas hydrate growth dynamics utilizing mid-infrared (MIR) fiber-optic evanescent field spectroscopy have been established by exploiting the state-responsive IR absorption behavior of water. This has been achieved by peak area evaluation of the O-H stretch, H-O-H bend, and libration modes and assessing peak shifts in the 3rd libration overtone and libration bands during the formation and dissociation of simple clathrate hydrates of methane, ethane, and propane formed from aqueous solution. Hydrate growth and monitoring was facilitated with a customized pressure cell enabling operation up to aˆ¼5.9 MPa with spectroscopic, temperature, pressure, and video monitoring capabilities.SS tubing coupled to the hydrate chamber with a 1/4aquot; nut and ferrule system (SS- 400-NFSET). ... through the liquid inlet using a Shimadzu LC-10AD high performance liquid chromatography (HPLC) pump (Shimadzu Scientific Instruments, Columbia, MD). 6. ... 8. Liquid Drain: Liquid drainage was facilitated by a manual 46.


Title:Analysis of Chemical Signals from Complex Oceanic Gas Hydrate Ecosystems with Infrared Spectroscopy
Author:
Publisher:ProQuest - 2007
ISBN-13:

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