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ANOVA and factor analysis applied to time domain NMR signals

Title
ANOVA and factor analysis applied to time domain NMR signals
Type
Article in International Scientific Journal
Year
1997
Authors
Rutledge, DN
(Author)
Other
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Barros, AS
(Author)
Other
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Gaudard, F
(Author)
Other
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Journal
Vol. 35
Pages: S13-S21
ISSN: 0749-1581
Publisher: Wiley-Blackwell
Other information
Authenticus ID: P-008-S25
Abstract (EN): Time domain (or low resolution pulse) NMR can generate a range of relaxation curves (CPMG, I-R, P-S, HSE, FID, etc.) which may vary depending on the characteristic of the product being controlled - water content, hydration state, solid fat content, iodine number or even authenticity of origin. Very often, the NMR signal is decomposed into a sum of exponential relaxation curves and the calculated NMR parameters (e.g. R1, R2, M0) are correlated with the property under study. Chemometric techniques, such as analysis of variance (ANOVA) and factor analysis, were shown to be effective means of determining whether a given set of NMR signals contains any interesting information before proceeding to use fastidious and often uncertain signal decomposition procedures. These techniques were applied to NMR signals acquired for spreads and gelatines with different compositions, to mixtures of a cation (Cu2+) and a ligand (tetraphenylporphin) and to glycine solutions at different pH values. © 1997 John Wiley & Sons, Ltd.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 9
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