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Analysis of cold rolling oils by NMR and IR techniques
Date Issued
01-04-1996
Author(s)
Chopra, Anju
Sastry, M. I.S.
Kapur, G. S.
Sarpal, A. S.
Jain, S. K.
Srivastava, S. P.
Bhatnagar, A. K.
Abstract
A new methodology has been developed, based on infrared (IR) and nuclear magnetic resonance (NMR) spectroscopic techniques for the quantitation of various components in rolling oils without their prior separation. The IR method makes use of a curve-fitting approach in which the multicomponent mixtures with overlapping bands can be quantified without exhibiting isolated, characteristic frequencies for each component. Prior information about the nature and type of the components in the mixture is the basic requirement for this method. NMR methodology involves the direct identification and quantitation o fvarious components from their characteristic 1H, 13C and 31P-NMR chemical shift data. Both IR and NMR techniques have been successfully applied to nine component blends and commercial oils.
Volume
52