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Insight into resolution enhancement in generalized two-dimensional correlation spectroscopy

Ma, L and Sikirzhytski, V and Hong, Z and Lednev, IK and Asher, SA (2013) Insight into resolution enhancement in generalized two-dimensional correlation spectroscopy. Applied Spectroscopy, 67 (3). 283 - 290. ISSN 0003-7028

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Generalized two-dimensional correlation spectroscopy (2D-COS) can be used to enhance spectral resolution in order to help differentiate highly overlapped spectral bands. Despite the numerous extensive 2D-COS investigations, the origin of the 2D spectral resolution enhancement mechanism(s) is not completely understood. In the work here, we studied the 2D-COS of simulated spectra in order to develop new insights into the dependence of 2D-COS spectral features on the overlapping band separations, their intensities and bandwidths, and their band intensity change rates. We found that the features in the 2D-COS maps that are derived from overlapping bands were determined by the spectral normalized half-intensities and the total intensity changes of the correlated bands. We identified the conditions required to resolve overlapping bands. In particular, 2D-COS peak resolution requires that the normalized half-intensities of a correlating band have amplitudes between the maxima and minima of the normalized half-intensities of the overlapping bands. © 2013 Society for Applied Spectroscopy.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Ma, L
Sikirzhytski, V
Hong, Z
Lednev, IK
Asher, SAasher@pitt.eduASHER
Date: 1 March 2013
Date Type: Publication
Journal or Publication Title: Applied Spectroscopy
Volume: 67
Number: 3
Page Range: 283 - 290
DOI or Unique Handle: 10.1366/11-06541
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 0003-7028
MeSH Headings: Algorithms; Computer Simulation; Models, Chemical; Spectrum Analysis--methods
Other ID: NLM NIHMS565679, NLM PMC3976562
PubMed Central ID: PMC3976562
PubMed ID: 23452492
Date Deposited: 03 Dec 2014 15:38
Last Modified: 02 Feb 2019 16:55


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