Fourier-transform infrared spectroscopy data-processing techniques

Gillette PC, Lando JB, Koening JL (1985) A survey of infrared spectral data processing techniques In Ferraro JR, Basile LJ (eds) Fourier transform infrared spectroscopy -applications to chemical systems, Vol 4 Academic Press, New York, 1-47 Graham JA, Grim WM III, Fateley WG (1985) Fourier transform infrared photoacoustic spectroscopy of condensed-phase samples, In Ferraro JR, Basile LJ (eds) Fourier transform infrared) spectroscopy - applications to chemical systems, Vol 4 Academic Press, New York, 345-392... 

The conventional thermoanalytical techniques (thermogravimetry TG, differential scanning calorimetry DSC, differential thermal alysis DTA, etc.) can provide fundamental data concerning the thermal behaviour of these substances, but the addition of mass spectrometry (TG-MS) or Fourier transform infrared spectroscopy (TG-FTIR) has permitted the identification of gaseous species evolved during thermal processes. 

We study ligand binding and protein dynamics using four different techniques, flash photolysis [1-5], Fourier-transform infrared spectroscopy [6, 7], X-ray diffraction [8, 9], and SQUID susceptometry [10]. With all techniques, we attempt to observe the heme proteins and their reactions over as wide a range of parameters as possible. In flash photolysis, for example, we follow the binding process from 25 ps to about 1 ks (over 13 orders of magnitude in time), at temperatures from 2 to 330 K, at pressures up to 2 kbar, and in various solvents. We demand from our model that it describe all data, not just a conveniently chosen subset. 

Fourier Transform Infrared (FT-IR) Spectroscopy is one of the most versatile techniques available for providing analytical data on the raw materials, the process chemistry and the products. Dispersive infrared spectroscopy has traditionally been an important tool in fuel characterization since most organic and mineral components absorb in the IR. Discussions of applications to coal may be found in Lowry (1 ), van Krevlen (2 ), Friedel O), Brown (O, Brooks, Durie and Sternhell ( 5) Friedel and Retcofsky (O and references cited therein. But FT-IR with its advantages in speed, sensitivity and data processing has added new dimensions. 

Fourier transform infrared (FTIR) spectroscopy is a powerful and reliable technique that for many years has been an important tool for investigating chemical processes and structures. In the polymer fields, FTTR data is used in order to study characterization of chemical bonds, polymer microstructure, chain conformation, polymer morphology, crystallinity and etc, consequently is useful in SPR studies. 

One of the principal contributions of electronic data processing over the past several years in terms of chemical analysis is the saving of manual effort in interpreting analytical data. Special techniques, such as Fourier transform, have increased speed (as well as sensitivity) by orders of magnitude in connection with infrared, nuclear magnetic resonance, and mass spectroscopy, Of course, for on-line process analyses, essentially instantaneous interpretation is required to provide the proper error signal that is used to position the final control element (valve, feeder, damper, etc.). 

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