Effect of irradiation in the visual and infrared spectral regions on nuclear magnetic relaxation parameters of protons in oil products

被引：23

作者：

Kashaev, R. S. ^{[1
]}

Gazizov, E. G. ^{[1
]}

机构：

[1] Kazan State Power Engn Univ, Kazan 420066, Russia

来源：

JOURNAL OF APPLIED SPECTROSCOPY | 2010年 / 77卷 / 03期

关键词：

oil; nuclear magnetic resonance relaxometry; laser; dispersed systems;

D O I：

10.1007/s10812-010-9334-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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.

引用

页码：321 / 328

页数：8