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  • 11
    Electronic Resource
    Electronic Resource
    Raman scattering temperature measurements for water vapor in non-equilibrium dispersed two-phase flow (1987)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 18 (1987), S. 333-337 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Laser Raman spectroscopy has been demonstrated to be a useful technique for making temperature measurements in single-phase water vapor at atomospheric pressure over the temperature range 393-593 K. It has also been demonstrated that laser Raman spectroscopy can measure water vapor temperatures in non-equilibrium dispersed two-phase flow over the temperature range 393-353 K in spite of large Rayleigh and Mie scattering from droplets. Estimated temperature uncertainties are ±15 K for single-phase and ±22 K for two-phase flows.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250180507
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  • 12
    Electronic Resource
    Electronic Resource
    Crystal standard/metal disc method for the measurement of low-temperature resonance Raman spectra in the solid state (1987)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 18 (1987), S. 277-279 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Mounting a sodium nitrate crystal on the surface of a disc made by compacting silver powder and the material to be studied enables Raman spectra of compounds such as zinc and nickel phthalocyanine to be measured in such a way that relative peak inteasities in any one disc can be quantified using the nitrate as a standard. It is a good method for the measurement of low-temperature spectra of resonant compounds and for the measurement of temperature dependence.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250180409
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  • 13
    Electronic Resource
    Electronic Resource
    The use of compacted metal discs to measure Raman spectra (1985)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 16 (1985), S. 245-250 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Compacted discs prepared from a mixture of finely divided particles of a compound diluted in a large excess of metal powder facilitate the measurement of Raman spectra for some compounds which give poor scattering by conventional techniques. The method is most useful with coloured compounds. The advantages include simplicity, increased signal-to-noise ratio by factors of up to 1000 and decreased or altered fluorescence. The effect appears to be caused mainly by small crevices in the compacted metal surface which act as internal mirrors to produce many small multiple-reflection cells, but there is also evidence of an electronic interaction with the metal surface. Silver, aluminium and copper matrices were studied, silver being found to be the most advantageous, although aluminium under certain conditions may also be effective.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250160406
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  • 14
    Electronic Resource
    Electronic Resource
    Surface enhanced resonance Raman scattering from cyanocobalamin and 5′-deoxyadenosylcobalamin (1995)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 26 (1995), S. 1075-1076 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Surface enhanced resonance Raman scattering (SERRS) from cobalamins is reported. To achieve efficient adsorption and strong SERRS, the molecule is adsorbed on a polysine-treated silver colloid surface. This provides an organic barrier between the cobalamin and the metal, preventing denaturation, and gives positively charged groups for efficient adsorption. The technique can be used for in situ studies of changes in the metal coordination sphere, as is illustrated by reduction on the surface using dithionite for both cyanocobalamin and 5′-deoxyadenosylcobalamin. The efficient energy transfer at the surface appears to prevent photodegradation, which is a problem with resonance, and the efficiency of SERRS allows measurements at low effective concentrations.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250261210
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