Author: Randall Robert GorePublisher:
ISBN:
Category : Aromatic compounds
Languages : en
Pages : 314
Book Description
Dye Laser Excited Fluorescence Spectroscopy of Matrix Isolated Polycyclic Aromatic Hydrocarbons
Author: Randall Robert GorePublisher:
ISBN:
Category : Aromatic compounds
Languages : en
Pages : 314
Book Description
Scientific and Technical Aerospace Reports
Author: Modern Fluorescence Spectroscopy
Author: E. L. WehryPublisher: Plenum Publishing Corporation
ISBN:
Category : Medical
Languages : en
Pages : 312
Book Description
Analytical Chemistry of Polycyclic Aromatic Compounds
Author: Milton LeePublisher: Elsevier
ISBN: 0323149030
Category : Science
Languages : en
Pages : 475
Book Description
Analytical Chemistry of Polycyclic Aromatic Compounds focuses on the chemical and physical properties of the polycyclic aromatic compounds, critically evaluating various chromatographic and spectroscopic methods. This book discusses how gas chromatography and high-performance liquid chromatography can be both competitive and complementary analytical methods. Ancillary techniques of both are emphasized for the structural elucidation of individual polycyclic aromatic compounds in complex mixtures. The merits of spectroscopic methods in both structural work and quantitation are also described. This text likewise provides background information concerning the chemistry, occurrence, and toxicology of polycyclic aromatic compounds, including the isolation of polycyclic aromatic compounds from a wide variety of materials and matrices. This publication is recommended to scientists involved with the study of polycyclic aromatic compounds, analysts who need to acquire routine data, and individuals charged with formulating environmental policies and drafting regulations.
Measurement of Radical-species Concentrations and Polycyclic Aromatic Hydrocarbons in Flames by Fluorescence and Absorption Using a Tunable Dye Laser. Progress Report, March 1, 1980-February 28, 1981
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A theoretical and experimental investigation of OH saturated fluorescence is described. The goal of the research is to develop a saturated fluorescence technique which will yield accurate molecular number densities over a wide range of flame pressure, temperature, and composition. Experimentally, OH is excited by a ten nanosecond pulse from a Nd:YAG-pumped dye laser tuned to an isolated rotational transition in the (0,0) band of the A2.sigma.-X2 pi electronic system. The resulting fluorescence signal is resolved both spectrally and temporally. Total OH number densities are calculated by collecting fluorescence from the directly excited upper rotational level, and using the balanced cross-rate model to analyze the experimental data. Fluorescence measurements of OH number density agree to within a factor of three with the results of independent OH absorption measurements. Significantly, the ratio of the fluorescence signal to the number density measured by absorption is nearly the same in 30, 100 and 250 torr H2/O2/N2 flat flames, demonstrating the insensitivity of the saturated fluorescence signal to the quenching environment of the radical. Collisional transfer in excited OH is studied by recording the time development of OH fluorescence spectrum. The experimental spectra are compared with the results of time-dependent computer modeling. By varying rotational transfer rates until the calculated and experimental spectra agree, rotational transfer cross sections can be calculated. The signal processing system was thoroughly checked by comparing the photomultiplier output to that of a fast photodiode, and by comparing single pulse Rayleigh scattering and fluorescence traces with sampling oscilloscope traces.
Energy Research Abstracts
Author: Photochemistry
Author: D. Bryce-SmithPublisher: Royal Society of Chemistry
ISBN: 0851861059
Category : Reference
Languages : en
Pages : 612
Book Description
The breadth of scientific and technological interests in the general topic of photochemistry is truly enormous and includes, for example, such diverse areas as microelectronics, atmospheric chemistry, organic synthesis, non-conventional photoimaging, photosynthesis, solar energy conversion, polymer technologies, and spectroscopy. This Specialist Periodical Report on Photochemistry aims to provide an annual review of photo-induced processes that have relevance to the above wide-ranging academic and commercial disciplines, and interests in chemistry, physics, biology and technology. In order to provide easy access to this vast and varied literature, each volume of Photochemistry comprises sections concerned with photophysical processes in condensed phases, organic aspects which are sub-divided by chromophore type, polymer photochemistry, and photochemical aspects of solar energy conversion. Volume 34 covers literature published from July 2001 to June 2002. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.
Energy Research Abstracts
Author: American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 872
Book Description
Author: