| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1238350 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2007 | 4 Pages |
Abstract
The acid-base properties of mononitro-calix[4]arene was studied with chemometric methods by measurement of its UV absorbance under different pH. The chemometric method-iterative target transformation factor (ITTFA) was employed to resolve the acid-base fraction curves. Combining with other chemometric methods-principal component analysis (PCA) and evolving factor analysis (EFA), the proton dissociation behavior of the derivative was investigated in detail. The pKa values of the derivative were determined and the fraction curves and pure absorbing spectra of each absorbing component were obtained.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
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Authors
Li Wang, Xian-Fa Shi, Zhong-Liang Zhu,