New ways of probing surface nuclear relaxation and microdynamics of water and oil in porous media

被引：10

作者：

Godefroy, S

Korb, JP ^{[1
]}

Fleury, M

Bryant, RG

机构：

[1] Ecole Polytech, Phys Mat Condensee Lab, F-91128 Palaiseau, France

[2] Inst Francais Petr, F-92852 Rueil Malmaison, France

[3] Univ Virginia, Dept Chem, Charlottesville, VA 22901 USA

来源：

MAGNETIC RESONANCE IMAGING | 2001年 / 19卷 / 3-4期

关键词：

NMR; surface microdynamics; surface relaxation; field cycling; surface affinity;

D O I：

10.1016/S0730-725X(01)00282-X

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The microdynamics of water and oil in macroporous media with SiO2 or CaCO3 surfaces has been probed at various temperatures by magnetic field-cycling measurements of spin-lattice relaxation rates. These measurements and an original theory of surface diffusion allow us to obtain surface dynamical parameters such as surface correlation times, residence times and diffusion coefficients. A coefficient of affinity of the liquids for the pore surface is deduced. (C) 2001 Elsevier Science Inc. All rights reserved.

引用

页码：517 / 519

页数：3

共 9 条

[1] IMPORTANCE OF CLASSICAL DIFFUSION IN NMR-STUDIES OF WATER IN BIOLOGICAL CELLS [J].