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	An Insight into Sequential Order in Two-Dimensional Correlation Spectroscopy
	Jia, Qi ; Wang, Nan-Nan ; Yu, Zhi-Wu
	2010-10-12 ; 2010-10-12
关键词	Two-dimensional correlation analysis 2D-COS Sequential order Noda's rules Simulation INFRARED CORRELATION SPECTROSCOPY SELECTIVE MOLECULAR-INTERACTIONS PRINCIPAL COMPONENT ANALYSIS RAY-ABSORPTION-SPECTROSCOPY FT-IR SPECTROSCOPY NORMALIZATION METHOD CORRELATION SPECTRA DIMETHYL-SULFOXIDE RAMAN-SPECTROSCOPY PHASE-TRANSITIONS Instruments & Instrumentation Spectroscopy
中文摘要	Determination of the sequential order of events is a very important feature of generalized two-dimensional correlation spectroscopy (2D-COS). Recently, queries have been put forward on the actual effectiveness of this method when changes are non-periodic, particularly in the presence of local sequential order. Consequently, it brings an urgent necessity to understand the true connotation of the sequential order parameter derived from 2D-COS analysis. This article presents an attempt to address these questions based on the analysis of simulated spectra by assuming the band intensity changes in a logarithmic, exponential, hyperbolic, or polynomial manner. It is concluded that for two events changing monotonically and without local sequential orders, one event occurring prior to the other as determined using 2D-COS means in most cases that the former has both a shorter half-time and a greater half-intensity. As a rule of thumb, intensity versus the perturbation factor should be plotted before performing the 2D-COS analysis to determine the sequential order of the involved events. In the presence of obvious local sequential order, 2D-COS analysis is unnecessary. Otherwise, sequential order can be determined quite reliably based on 2D-COS analysis.
语种	英语 ; 英语
出版者	SOC APPLIED SPECTROSCOPY ; FREDERICK ; 201B BROADWAY ST, FREDERICK, MD 21701 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80961]
专题	清华大学
推荐引用方式 GB/T 7714	Jia, Qi,Wang, Nan-Nan,Yu, Zhi-Wu. An Insight into Sequential Order in Two-Dimensional Correlation Spectroscopy[J],2010, 2010.
APA	Jia, Qi,Wang, Nan-Nan,&Yu, Zhi-Wu.(2010).An Insight into Sequential Order in Two-Dimensional Correlation Spectroscopy..
MLA	Jia, Qi,et al."An Insight into Sequential Order in Two-Dimensional Correlation Spectroscopy".(2010).

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