SI, The Quantitative Measurement Of Distortion Of Smoothed Fourier Transform Infrared Spectra

Wang Jin Hai

doi:10.1117/12.969599

1 December 1989 SI, The Quantitative Measurement Of Distortion Of Smoothed Fourier Transform Infrared Spectra

Wang Jin Hai

Proceedings Volume 1145, 7th Intl Conf on Fourier Transform Spectroscopy; (1989) https://doi.org/10.1117/12.969599
Event: Seventh International Conference on Fourier and Computerized Infrared Spectroscopy, 1989, Fairfax, VA, United States

Abstract

The smooth is an effective function of data process to improve the quality and the S/N ratio of FTIR spectra. Unfortunately, the smooth results in simultaneously the distortions of spectra and the loss of valuable spectral information in different extent. How many will the distortions be? How can we reduce it? No systematic research was reported up to now [1-- 4,6]. This paper presents the primary answer. Like smooth effect, distortion is proportional to the number of points (Np) and the number of runs (Nr). The distortions include the decrease of absorbance intensity, the disappear-ance of some small and/or shoulder bands and the shift of some bands to higher or lower +requencies C53. A function of smoo-th index (:r) can he used to measure the distortion extent which is de.fined for the first time by the follownd empiric formula:

Citation Download Citation

Wang Jin Hai "SI, The Quantitative Measurement Of Distortion Of Smoothed Fourier Transform Infrared Spectra", Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); https://doi.org/10.1117/12.969599

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