Determination of relative rate of spectral events by novel modification of two-dimensional correlation spectroscopy

2011 ◽  
Vol 702 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Mirosław A. Czarnecki
Keyword(s):  
Relative Rate ◽  
Correlation Spectroscopy ◽  
Two Dimensional

Determination of polyphenols in oats by near-infrared spectroscopy (NIRS) and two-dimensional correlation spectroscopy

2019 ◽  
Vol 52 (6) ◽  
pp. 962-971 ◽  
Author(s):  
Xiang-Yuan Zeng ◽  
Wu-Qi Zhao ◽  
Xin-Zhong Hu ◽  
Xiao-Ping Li ◽  
Yao-Yao Qiao ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Correlation Spectroscopy ◽  
Two Dimensional

Two-Dimensional Correlation Spectroscopy: The Power of Power Spectra

2020 ◽  
Vol 74 (8) ◽  
pp. 894-899
Author(s):  
Mirosław A. Czarnecki
Keyword(s):  
Molecular Dynamics ◽  
Correlation Analysis ◽  
Power Spectrum ◽  
Power Spectra ◽  
Correlation Spectroscopy ◽  
Two Dimensional ◽  
Molecular Fragments ◽  
Spectral Changes ◽  
Structure Correlations

Power spectra are a powerful tool provided by two-dimensional correlation analysis. However, this tool is seldom used in practice. This work shows selected examples of using of the power spectra for the study of various kinds of samples with the aim to promote more common use of this tool. By examination of the power spectrum of specific sample, one can estimate the sensitivity of different molecular fragments on a given perturbation. Determination of the power spectra for smaller data subsets provides information on the dynamics of perturbation-induced spectral changes. If the experimental spectra of different samples in the same perturbation window are recorded, the comparison of the power spectra yields information on differences in the sensitivity of various samples on common perturbation. This possibility is particularly useful for studies of the spectra-structure correlations, interactions, and molecular dynamics. A comparison of the power spectra obtained by using different reference spectra provides information on the nature of spectral changes at different wavenumbers.

Determination of Methanol in Alcoholic Beverages by Two-Dimensional Near-Infrared Correlation Spectroscopy

2016 ◽  
Vol 49 (14) ◽  
pp. 2279-2289 ◽  
Author(s):  
Y. R. Yang ◽  
Y. F. Ren ◽  
G. M. Dong ◽  
R. J. Yang ◽  
H. X. Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Correlation Spectroscopy ◽  
Alcoholic Beverages ◽  
Two Dimensional
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