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 a¼5.9 MPa with spectroscopic, temperature, pressure, and video monitoring capabilities.... KOH solution was added with a 0.10a1.00mL calibrated Eppendorf pipette ( Eppendorf North America Inc., New York, NY). ... or blind sample suspension was aspirated and dispensed from a single-use disposable plastic pipette for approx.
|Title||:||Analysis of Chemical Signals from Complex Oceanic Gas Hydrate Ecosystems with Infrared Spectroscopy|
|Author||:||Gary T. Dobbs|
|Publisher||:||ProQuest - 2007|