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Fourier transform infrared spectrometry.

P R Griffiths

    Science (New York, N.Y.)
    |October 21, 1983
    PubMed
    Summary

    Fourier transform infrared spectrometry offers significant speed and sensitivity advantages over traditional methods. This advanced technique is revolutionizing various scientific fields, from atmospheric monitoring to biomedical research.

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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy
    • Physical Chemistry

    Background:

    • Traditional grating spectrometers are time-consuming for infrared spectrum analysis.
    • Emerging Fourier transform infrared spectrometry (FTIR) offers enhanced performance.
    • FTIR instruments are now commercially available from multiple vendors.

    Purpose of the Study:

    • To discuss the theory and instrumentation of Fourier transform infrared spectrometry.
    • To highlight the performance benefits of FTIR compared to grating spectrometers.
    • To outline current and potential applications of FTIR in various scientific domains.

    Main Methods:

    • Discussion of the theoretical principles underlying FTIR.
    • Overview of the instrumentation design for FTIR spectrometers.
    • Comparison of FTIR performance metrics (speed, sensitivity) with grating spectrometers.

    Main Results:

    • FTIR instruments achieve comparable spectral quality in significantly less time (1/1000th).
    • FTIR demonstrates a sensitivity advantage of 10-100 times over grating spectrometers for equal measurement times.
    • Commercial FTIR spectrometers are readily available from nine North American vendors.

    Conclusions:

    • Fourier transform infrared spectrometry represents a major advancement in spectroscopic analysis.
    • FTIR's speed and sensitivity enable new possibilities in diverse chemical and biological research.
    • Applications span atmospheric monitoring, surface chemistry, chromatography, lipid studies, and biomaterial analysis.

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