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Monday, October 5, 2020 | History

2 edition of study of trace contaminant identification by microwave double resonance spectroscopy found in the catalog.

study of trace contaminant identification by microwave double resonance spectroscopy

Richard J. Volpicelli

study of trace contaminant identification by microwave double resonance spectroscopy

by Richard J. Volpicelli

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  • 8 Currently reading

Published by National Aeronautics and Space Administration; for sale by the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. in [Washington] .
Written in English

    Subjects:
  • Microwave spectroscopy.

  • Edition Notes

    Statementby Richard J. Volpicelli, Otto L. Stiefvater, and George W. Flynn.
    SeriesNASA contractor report,, NASA CR-967
    ContributionsStiefvater, Otto L., joint author., Flynn, George W., joint author., Research Systems, inc., Langley Research Center.
    Classifications
    LC ClassificationsTL521 .3.C6A3 no. 967
    The Physical Object
    Paginationiii, 97 p.
    Number of Pages97
    ID Numbers
    Open LibraryOL5634573M
    LC Control Number68061571

    The Microwave Laboratory. Main menu. Adventures in the Submillimeter Persons, C. M., De Lucia, F. C. & Everitt, H. O. Design and signature analysis of remote trace-gas identification methodology based on infrared-terahertz Tanner, E. A., De Lucia, F. C. & Everitt, H. O. Infrared-terahertz double-resonance spectroscopy of CH 3 F and CH 3.   Introduction. Although metallomics has become a well established field, there are only a few methods for measuring in situ cellular metal speciation. We have used high magnetic field (3 and 10 teslas) high microwave frequency (95– GHz) electron paramagnetic resonance (HFEPR) 3 spectroscopy to identify and measure Mn(II) species in intact cells of Deinococcus radiodurans, a Cited by:

    Residual traces of the metals copper and lead on an individual's skin may be elucidated by reaction of rubeanic acid with a gelatine lift taken from the target area in question, yielding intensely coloured reaction products. This non-invasive technique has been Cited by: 3. “Together with ultraviolet/visible (UV/Vis), infrared (IR), and nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS) is a key technology in the identification of unknown compounds” could be the opening sentence of an undergraduate course on the use of analytical techniques to identify unknown small organic by:

    This double resonance technique has now been adapted as a new means for remotely identifying the constituents of a trace gas cloud at distances up to 1 km. 4) Terahertz Imaging. This newest activity uses powerful, cw, tunable millimeter- and submillimeter-wave sources to adapt various coherent imaging techniques to the terahertz spectral region. Microwave spectroscopy is a powerful tool for chemical sensing because it detects chemicals on the basis of their rotational transition spectra. A molecule’s rotational transitions are directly related to its physical structure and can be predicted by quantum physics.


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Study of trace contaminant identification by microwave double resonance spectroscopy by Richard J. Volpicelli Download PDF EPUB FB2

Tems Inc. was the development and investigation of double resonance microwave spectroscopy as a possible means of contaminant detection. search consisted of three parts: The proposed re- 1. The development and construction of a double resonance microwave spectrometer.

The determination of the optimal experimental conditions for observ. A study of trace contaminant identification by microwave double resonance spectroscopy, Author: Richard J Volpicelli ; Otto L Stiefvater ; George W Flynn ; Research Systems, Inc.

; Langley Research Center. Trace contaminant identification using microwave double resonance spectroscop Topics: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR Year: Double Resonance Spectroscopy for Remote Sensing of Trace Molecular Gases collisional physics in the microwave/microwave and infrared/millimeter wave regions [1 - 7].

Although wavelength- Keywords: Double Resonance Spectroscopy, Chemical Remote Sensing, Trace Gas Detection. microwave double resonance spectroscopy (AMDOR),10 microwave spectral taxonomy,14 and pattern recognition methods were extensively used. Several. A new method for highly selective remote sensing of atmospheric trace polar molecular gases is described.

Based on infrared/terahertz double resonance spectroscopic techniques, the molecule-specific coincidence between the lines of a CO 2 laser and rotational-vibrational molecular.

Microwave Spectroscopy. The trigger channel information is used to identify the margins of the sweep. The initial estimate of the frequency range is obtained from the data of the high-voltage ramp channel by comparison to the stored BWO frequency–voltage characteristics.

Thus microwave-optical double resonance (MODR) uses optical (say. Rotational Resonance (FT-MRR) Spectroscopy The simplicity of FTIR, the power of Mass Spec Direct Analysis of Complex Mixtures Impurities in gases, Environmental analysis, Semicon processes Reprogrammable Sensors for Multispecies Monitoring Residual solvent analysis, Genotoxicity testing, Environmental Monitoring.

Electron Paramagnetic Resonance Spectroscopy. and 15 mW microwave power at 12 K. Trace 2 shows the Fe protein in the presence of MgATP ( mM) under the same spectra conditions as trace.

This manuscript presents the results of the International Measurement Evaluation Programme 40 (IMEP) study, a proficiency test (PT) which was organised to assess the worldwide performance of laboratories for the determination of trace elements in seawater. This PT supports the implementation of the European Union Water Framework Directive /60/EC, which aims at Cited by: 3.

2 INFRARED SPECTROSCOPY mind is that a successful interpretation is based not only on the presence of particular bands within the spectrum, but also the absence of other important bands. Complete classes of compounds can be rapidly excluded during the interpretation by the use of no-band information.

It must be understood that this article addresses. A variety of frequency-modulation methods for high-sensitivity absorption detection of gas-phase species has evolved in recent years.

The distinctions among these methods are mostly semantic. The mathematical derivations for wavelength-modulation spectroscopy and one- and two-tone frequency-modulation spectroscopies are presented; a common terminology is used to permit a comprehensive.

This chapter reviews the recent progress made in the use of trapped ions for spectroscopy, quantum optics, and frequency standards. It is clear that techniques using trapped ions are complementary to other spectroscopic techniques, offering significant advantages under some circumstances, but Cited by: Present and Future Challenges in Food Analysis: Foodomics The state-of-the-art of food analysis at the beginning of the 21st century is presented in this work, together with its major applications, current limitations, and present and foreseen challenges.

“Automated microwave double resonance spectroscopy: A tool to identify and characterize chemical compounds” | Marie-Aline Martin-Drumel, Michael C. McCarthy, David Patterson, Brett A.

McGuire, and Kyle N. Crabtree | The Journal of Chemical Physics Vol. Is DOI: /   Current industrial-scale distillers rely on a spectroscopy technique called mass spectroscopy that measures molecular mass to identify individual compounds and their concentrations.

Although mass spectroscopy is a powerful technique, it is burdened with slow turnaround (time needed to get an answer) and it can only identify compounds for which Author: Robin Felder.

The objective of the present study was to investigate trace metal levels of different varieties of fresh water fish using Inductively Coupled Plasma Mass Spectrophotometer after microwave digestion (MD-ICPMS). Fish samples were collected from Cited by: 5.

Contents Double Bond Equivalents The Interaction of Electromagnetic Radiation with Molecules Instrumentation Chromophores Applications of UV Spectroscopy Selection Rules and the Beer-Lambert Law Instrumentation Characteristic Group Vibrations Selection Rules and Hooke's Law 1 4 7 8 10 19 24 26 27 Nuclear magnetic resonance (NMR) is arguably the most powerful and versatile tool in modern science.

It has the capability to solve complex structures and interactions in situ even in complex heterogeneous multiphase samples such as soil, plants, and tissues. NMR has vast potential in environmental research and can provide insight into a diverse range of environmental processes at the Cited by:   Abstract.

Consumer concerns and government regulations focused on the safety of foods dictate the need for analysis of various food contaminants, residues, and chemical constituents of compounds include pesticide residues, mycotoxins, antibiotic residues, GMOs, allergens, food adulterants, packaging material hazardous chemicals, environmental contaminants, and certain Cited by: 2.

Ultraviolet and Visible Spectroscopy Nature of Electronic Transitions Principles of Absorption Spectroscopy The molecular spectroscopy is the study of the interaction of electromagnetic waves and matter.

traveling through space is represented by a sinusoidal trace. Collections of articles on portable spectroscopy can be found in a recent special issue of Applied Spectroscopy, 2 the SPIE conference series “Next-Generation Spectroscopic Technologies,” 42 –46 and a series of general review articles on field spectroscopy in John Wiley’s Encyclopedia of Analytical Chemistry.

47 The use of portable.Optical Double-Resonance Spectroscopy of Cesium Atoms in a Magneto-Optical Trap. Tunable Infrared Laser Sources for Spectroscopy and Atmospheric Trace Gas Detection.

A New Method for the Identification of Inner-Shell Autoionizing States by .