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Fiber Optic Raman Spectroscopy For Detection Of Methane Hydrates And Related Species
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Book Synopsis Fiber Optic Raman Spectroscopy for Detection of Methane Hydrates and Related Species by :
Download or read book Fiber Optic Raman Spectroscopy for Detection of Methane Hydrates and Related Species written by and published by . This book was released on 2001 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A capillary waveguide fiber optic probe system has been constructed which is capable of rapidly collecting Raman spectra of organic compounds in water. It consists of a dual fiber optic probe coupled to a capillary waveguide designed to increase the volume of sample interrogated by the excitation light. A Nd:YAG laser operating at 532 nm is used to generate Raman scatter at the sample in the capillary which is transmitted by the collection fiber to a notch filter holder and linear array detector. The feasibility of using this system for methane hydrate detection is evaluated through the use of organic surrogate molecules, due to the low solubility of methane in water at atmospheric pressures. The eventual application is the oceanic detection of methane gas, liquid, and solid hydrate at great depths (1000's of meters). Under these conditions, the solubility of methane increases significantly and solid hydrate may be present. The relative Raman cross sections of methane and other organic compounds relative to nitrogen are documented. The benefit of using a capillary waveguide with the dual fiber optic probe is quantitatively shown. The LOD of acetone (as a surrogate for methane) is determined and the LOD of methane under several experimental conditions is calculated. The ability to detect all three states (gas, liquid, and solid) is of great importance to the detection and characterization of ocean floor methane.
Book Synopsis Fiber Optic Raman Spectrograph for in Situ Environmental Monitoring. Final Report by :
Download or read book Fiber Optic Raman Spectrograph for in Situ Environmental Monitoring. Final Report written by and published by . This book was released on 1992 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the development and testing of a small laboratory prototype, field Raman spectrometer which can be used with a fiber optic sampling probe incorporting substrates tailored for surface enhanced Raman spectroscopy (SERS) for low level detection of chemical species. The report also discusses demonstration of apparatus for both laboratory and field environmental samples typical of DOE environmental restoration sites. Preliminary results establish a new technique which can be used in, the field to identify and profile in situ a wide variety of pollutants at the action levels required for remediation.
Book Synopsis Infrared Spectroscopic Monitoring of Gas Hydrates Via in Situ Fiber Optic Evanescent Field Spectroscopy by : Matthias Schwenk
Download or read book Infrared Spectroscopic Monitoring of Gas Hydrates Via in Situ Fiber Optic Evanescent Field Spectroscopy written by Matthias Schwenk and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of a Fiber Optic Probe for the Detection and Identification of Explosive Materials by Raman Spectroscopy by : IP. Hayward
Download or read book Use of a Fiber Optic Probe for the Detection and Identification of Explosive Materials by Raman Spectroscopy written by IP. Hayward and published by . This book was released on 1995 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fiber optic probe has been developed that allows Raman spectra to be acquired remotely from a spectrometer. This system has been used to acquire spectra from explosive materials. In this study we demonstrate that it is sufficiently sensitive to rapidly detect traces of PETN in fingerprints of Semtex-Hexplosive. Further development of similar systems will enable the detection and non-destructive identification of contraband materials in the field.
Book Synopsis Fiber-optic Raman Spectroscopy at the Savannah River Site by : S. E. Nave
Download or read book Fiber-optic Raman Spectroscopy at the Savannah River Site written by S. E. Nave and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calibration Between Fiber-optic Probe Based Raman Spectroscopy Systems by : Brittany Catherine Caldwell
Download or read book Calibration Between Fiber-optic Probe Based Raman Spectroscopy Systems written by Brittany Catherine Caldwell and published by . This book was released on 2011 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring the Wobbe Index of Natural Gas Using Fiber-enhanced Raman Spectroscopy by : Vincenz Sandfort
Download or read book Monitoring the Wobbe Index of Natural Gas Using Fiber-enhanced Raman Spectroscopy written by Vincenz Sandfort and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rugged Fiber Optic Probes and Sampling Systems for Remote Chemical Analysis Via the Raman Technique by :
Download or read book Rugged Fiber Optic Probes and Sampling Systems for Remote Chemical Analysis Via the Raman Technique written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in fiber optics, diode lasers, CCD detectors, dielectric and holographic optical filters, grating spectrometers, and chemometric data analysis have greatly simplified Raman spectroscopy. In order to make a rugged fiber optic Raman probe for solids/slurries like these at Savannah River, we have designed a probe that eliminates as many optical elements and surfaces as possible. The diffuse reflectance probe tip is modified for Raman scattering by installing thin dielectric in-line filters. Effects of each filter are shown for the NaNO3 Raman spectrum. By using a diode laser excitation at 780 nm, fluorescence is greatly reduced, and excellent spectra may be obtained from organic solids. At SRS, fiber optic Raman probes are being developed for in situ chemical mapping of radioactive waste storage tanks. Radiation darkening of silica fiber optics is negligible beyond 700 nm. Corrosion resistance is being evaluated. Analysis of process gas (off-gas from SRS processes) is investigated in some detail: hydrogen in nitrogen with NO2 interference. Other applications and the advantages of the method are pointed out briefly.
Book Synopsis Raman Spectroscopy of Biosignatures in Methane-related Microbialites by : Tim Leefmann
Download or read book Raman Spectroscopy of Biosignatures in Methane-related Microbialites written by Tim Leefmann and published by . This book was released on 2008 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface-enhanced Raman Spectroscopy with Abrasively Modified Fiber Optic Probes by : Ken I. Mullen
Download or read book Surface-enhanced Raman Spectroscopy with Abrasively Modified Fiber Optic Probes written by Ken I. Mullen and published by . This book was released on 1991 with total page 2199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developing Fibre Optic Raman Spectroscopy Probes for Cancer Diagnosis by : H. Sheridan
Download or read book Developing Fibre Optic Raman Spectroscopy Probes for Cancer Diagnosis written by H. Sheridan and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hyper-spectral Imaging Using Fiber Optic Spatial Decomposition for Raman Spectroscopy by : Nicholas L. Schwindt
Download or read book Hyper-spectral Imaging Using Fiber Optic Spatial Decomposition for Raman Spectroscopy written by Nicholas L. Schwindt and published by . This book was released on 2005 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopic Methods in Mineralogy and Geology by : Frank C. Hawthorne
Download or read book Spectroscopic Methods in Mineralogy and Geology written by Frank C. Hawthorne and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 18 of Reviews in Mineralogy provides a general introduction to the use of spectroscopic techniques in Earth Sciences. It gives an Introduction To Spectroscopic Methods and covers Symmetry, Group Theory And Quantum Mechanics; Spectrum-Fitting Methods; Infrared And Raman Spectroscopy; Inelastic Neutron Scattering; Vibrational Spectroscopy Of Hydrous Components; Optical Spectroscopy; Mossbauer Spectroscopy; MAS NMR Spectroscopy Of Minerals And Glasses; NMR Spectroscopy And Dynamic Processes In Mineralogy And Geochemistry; X-Ray Absorption Spectroscopy: Applications In Mineralogy ind Geochemistry; Electron Paramagnetic Resonance; Auger Electron And X-Ray Photelectron Spectroscopies and Luminescence, X-Ray Emission and New Spectroscopies. The authors of this volume presented a short course, entitled "Spectroscopic Methods in Mineralogy and Geology", May 13-15, 1988, in Hunt Valley, Maryland.
Book Synopsis Subseafloor Biosphere Linked to Hydrothermal Systems by : Jun-ichiro Ishibashi
Download or read book Subseafloor Biosphere Linked to Hydrothermal Systems written by Jun-ichiro Ishibashi and published by Springer. This book was released on 2015-01-10 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the comprehensive volume of the TAIGA (“a great river ” in Japanese) project. Supported by the Japanese government, the project examined the hypothesis that the subseafloor fluid advection system (subseafloor TAIGA) can be categorized into four types, TAIGAs of sulfur, hydrogen, carbon (methane), and iron, according to the most dominant reducing substance, and the chemolithoautotrophic bacteria/archaea that are inextricably associated with respective types of TAIGAs which are strongly affected by their geological background such as surrounding host rocks and tectonic settings. Sub-seafloor ecosystems are sustained by hydrothermal circulation or TAIGA that carry chemical energy to the chemosynthetic microbes living in an extreme environment. The results of the project have been summarized comprehensively in 50 chapters, and this book provides an overall introduction and relevant topics on the mid-ocean ridge system of the Indian Ocean and on the arc-backarc systems of the Southern Mariana Trough and Okinawa Trough.
Book Synopsis State-of-the-art Laser Gas Sensing Technologies by : Yufei Ma
Download or read book State-of-the-art Laser Gas Sensing Technologies written by Yufei Ma and published by MDPI. This book was released on 2020-03-05 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trace gas sensing technologies are widely used in many applications, such as environmental monitoring, life science, medical diagnostics, and planetary exploration. On the one hand, laser sources have developed greatly due to the rapid development of laser media and laser techniques in recent years. Some novel lasers such as solid-state, diode, and quantum cascade lasers have experienced significant progress. At present, laser wavelengths can cover the range from ultraviolet to terahertz, which could promote the development of laser gas sensing technologies significantly. On the other hand, some new gas sensing methods have appeared, such as photothermal spectroscopy and photoacoustic spectroscopy. Laser spectroscopy-based gas sensing techniques have the advantages of high sensitivity, non-invasiveness, and allowing in situ, real-time observation. Due to the rapid and recent developments in laser source as well as the great merits of laser spectroscopy-based gas sensing techniques, this book aims to provide an updated overview of the state-of-the-art laser gas sensing technologies.
Book Synopsis Hydrogen Storage Materials by : R. G. Barnes
Download or read book Hydrogen Storage Materials written by R. G. Barnes and published by . This book was released on 1988 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ames Laboratory, Iowa, USA
Book Synopsis Pharmaceutical Applications of Raman Spectroscopy by : Slobodan Sasic
Download or read book Pharmaceutical Applications of Raman Spectroscopy written by Slobodan Sasic and published by John Wiley & Sons. This book was released on 2007-10-23 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Raman spectroscopy has advanced in recent years with increasing use both in industry and academia. This is due largely to steady improvements in instrumentation, decreasing cost, and the availability of chemometrics to assist in the analysis of data. Pharmaceutical applications of Raman spectroscopy have developed similarly and this book will focus on those applications. Carefully organized with an emphasis on industry issues, Pharmaceutical Applications of Raman Spectroscopy, provides the basic theory of Raman effect and instrumentation, and then addresses a wide range of pharmaceutical applications. Current applications that are routinely used as well as those with promising potential are covered. Applications cover a broad range from discovery to manufacturing in the pharmaceutical industry and include identifying polymorphs, monitoring real-time processes, imaging solid dosage formulations, imaging active pharmaceutical ingredients in cells, and diagnostics.
