Author： Kashaev R. Gazizov E.
Publisher： Springer Publishing Company
ISSN： 0021-9037
Source： Journal of Applied Spectroscopy, Vol.77, Iss.3, 2010-07, pp. : 321-328
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Abstract
The influence of laser and non-coherent irradiation on the state of oil components has been studied at wavelengths of 630 and 1825 nm, respectively. New results reflecting changes in structural–dynamic parameters of the molecular motion as a function of exposure time have been obtained. The variations of NMR parameters during NIR irradiation of an oil sample prepared with the addition of paraffin (docosane) seem to be connected with "washing out" of these nanodimensional structures and can be explained theoretically in terms of the phenomenological description of the energy-level population behavior. The method of NMR relaxometry used in parallel with laser and non-coherent radiation in the NIR spectral region has been shown to enable one to readily determine oil components that are difficult to estimate by conventional techniques.
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