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Author: Gregory D. Gillispie Publisher: ISBN: Category : Fluorescence spectroscopy Languages : en Pages : 0
Book Description
This report summarizes the efforts at North Dakota State University to implement laser induced fluorescence spectroscopy as a means for sensitive detection of fuel and fuel related contamination. The direction of these efforts is upon in situ detection of polycyclic aromatic hydrocarbons in well monitoring or direct push, cone penetrometer testing (CPT). We discuss conventional approaches to fuel related detection and the inherent weaknesses therein. Both laboratory and field studies involving the applications of our laser based, time domain fluorescence instrument are presented. The principles of fluorescence spectroscopy pertinent to our concerns are outlined and discussed. Since light delivery and collection are based on fiber optics, the issues relating to fiber length, composite material, cladding, and wavelength dependence are presented. A review of our experimental methods and their relation to the results is provided, along with a discussion of the relevant concerns with interpretation of system performance. Data processing methods are presented, along with the results of the processing methods used during these studies. A presentation of wavelength time matrices (WTMs) and contour plots data formats is given. Results from field studies are also presented.
Author: Gregory D. Gillispie Publisher: ISBN: Category : Fluorescence spectroscopy Languages : en Pages : 0
Book Description
This report summarizes the efforts at North Dakota State University to implement laser induced fluorescence spectroscopy as a means for sensitive detection of fuel and fuel related contamination. The direction of these efforts is upon in situ detection of polycyclic aromatic hydrocarbons in well monitoring or direct push, cone penetrometer testing (CPT). We discuss conventional approaches to fuel related detection and the inherent weaknesses therein. Both laboratory and field studies involving the applications of our laser based, time domain fluorescence instrument are presented. The principles of fluorescence spectroscopy pertinent to our concerns are outlined and discussed. Since light delivery and collection are based on fiber optics, the issues relating to fiber length, composite material, cladding, and wavelength dependence are presented. A review of our experimental methods and their relation to the results is provided, along with a discussion of the relevant concerns with interpretation of system performance. Data processing methods are presented, along with the results of the processing methods used during these studies. A presentation of wavelength time matrices (WTMs) and contour plots data formats is given. Results from field studies are also presented.
Author: Katharine Balshaw-Biddle Publisher: CRC Press ISBN: 1000724468 Category : Science Languages : en Pages : 192
Book Description
While innovative technologies in remediation need to be developed, so do innovative ways of site assessment. This monograph describes the development, testing, and performance of a new laser-induced fluorescence soil probe. A screening tool for site characterization, this probe has the potential to provide an economical, rapid assessment of contaminated sites. Cone Penetrometer testing equipment advances the probe into the subsurface. The probe identifies hydrocarbon classes using a multi-channel excitation-emission matrix. This technique facilitates the collection of significant amounts of subsurface information - surpassing conventional data collection methods - that can be used to rapidly identify areas of concern beneath a site. The technology has significant application for the following: Rapid environmental site assessment Monitoring remediation programs Monitoring manufacturing processes and industrial waste water operations Subsurface Contamination Monitoring Using Laser Fluorescence provides comprehensive reference material for researchers and engineers as well as engineering consultants interested in subsurface monitoring techniques or further development of this technology. It describes innovative technology that focuses on finding cost effective solutions for site assessment and remediation.
Author: Peter Hering Publisher: Springer Science & Business Media ISBN: 3662082551 Category : Science Languages : en Pages : 353
Book Description
This comprehensive reference work illustrates the state of the art of laser-induced analytical methods in environmental and life sciences via an interdisciplinary approach. Ky techniques for remote sensing in the atmosphere as well as diagnostic methods for soil, water and air contamination and exhaled breath are described. Each a prominent scientist, the authors report on their current research; demonstrate that multi-disciplinary applications are possible; and employ examples on how existing environmental diagnostic methods have found their way into the life sciences.
Author: Wallace W. Shulz Publisher: Springer Science & Business Media ISBN: 1489915435 Category : Technology & Engineering Languages : en Pages : 513
Book Description
Radioactive wastes resulting from over 40 years of production of nuclear weapons in the U. S. are currently stored in 273 underground tanks at the U. S. Department of Energy Hanford site, Idaho National Engineering and Environmental Laboratory, Oak Ridge Reservation, and Savannah River site. Combined, tanks at these sjtes contain approximately 94,000,000 gallons of waste in a variety of forms including liquid, concrete-like salt cake, and various sludges. More than 730,000,000 curies of several radioactive isotopes are present in the underground tanks. Certainly, one of the greatest challenges facing the U. S. Department of Energy is how to characterize, retrieve, treat, and immobilize the great variety of tank wastes in a safe, timely, and cost-effective manner. For several years now, the U. S. Department of Energy has initiated and sponsored scientific and engineering studies, tests, and demonstrations to develop the myriad of technologies required to dispose of the radioactive tank wastes. In recent times, much of the Department of Energy R&D activities concerning tank wastes have been closely coordinated and organized through the Tanks Focus Area (IF A); responsibility for technical operations of the TF A has been assigned to the Pacific Northwest National Laboratory.
Author: Gregory D. Gillispie
Author: Gregory D. Gillispie
Author: Katharine Balshaw-Biddle
Author: Peter Hering
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Author: 
Author: 
Author: National Institute of Standards and Technology (U.S.)
Author: Stuart Farquharson
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Author: Wallace W. Shulz