By Heinz W. Siesler, Yukihiro Ozaki, Satoshi Kawata, H. Michael Heise

Over the past few years, near-infrared (NIR) spectroscopy has swiftly built into a big and very worthy approach to research. actually, for convinced learn components and purposes, starting from fabric technology through chemistry to lifestyles sciences, it has turn into an critical instrument simply because this speedy and reasonably-priced form of spectroscopy presents qualitative and quantitative info now not to be had from the other technique.This publication bargains a balanced evaluation of the elemental idea and instrumentation of NIR spectroscopy, introducing the fabric in a without problems understandable demeanour. a substantial a part of the textual content is devoted to useful functions, together with pattern education and investigations of polymers, textiles, medicines, nutrients and animal feed. despite the fact that, precise themes, equivalent to two-dimensional correlation research, also are lined in separate chapters. Written by way of 8 specialists in numerous fields, this ebook offers an advent to the present country of advancements and is efficacious to spectroscopists and to practitioners making use of NIR spectroscopy as a regular analytical instrument.

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Extra info for Near-Infrared Spectroscopy: Principles, Instruments, Applications

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1 Values of the anharmonicity constant x, for various vibrations. 10-2 ,.. 5. 5. 2 The Polyatomic Molecule A molecule containing a number, N, atoms will have (3N-6) vibrational degrees of freedom (3N-5 for linear molecules). The number of vibrational degrees of freedom gives the number of fundamental vibrational frequencies of the molecule or the number of different “normal” modes of vibration. A normal mode of vibration of a given molecule corresponds to internal atomic motions in which all atoms move in phase with the same frequency, but with different amplitudes.

1651 Y. OZAKI,I. NODA,J. Near Infrared Spectrosc. 1996, 4, 85. 1601 Near-Infrared Spectroscopy :Principles, Instruments, Applications Edited by H. W Siesler, Y. Ozaki, S. Kawata, H. M . Heise copyright 0 WILEY-VCH Verlag CrnbH,ZOOZ I Instrumentation for Near-Infrared Spectroscopy SATOSHIKAWATA In terms of instrumentation, near-infrared (NIR) spectroscopy is not distinctively different from either visible or infrared spectroscopy, although it may sound unique. Conventional instrumentation used for the visible or infrared regions can also be used for the NIR region, depending on purpose or on environment.

HERZBERG in Molecular Spectra and Molecular Structure, Vol. II. lnfiared and Raman Spectra or Polyatomic Molecules, Van Nostrand Reinhold, 1945. [14] E. B. WILSON,J. C. DECIUS,P. C. CROSS in Molecular Vibrations: The Theory oflnjared and Raman Vibrational Spectra, McGraw-Hill, 1955. [15] F. A. COTTON I N Chemical Applications of Group Theory,Wiley, 1963. (161 D. S. SCHONLAND in An introduction to Group Theory and its uses in Chemistry, Van Nostrand, 1965. [171 L. H. HALLin Group Theory and Symmetry in Chemistry, McGraw-Hill, 1969.

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