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Title: Simultaneous multiwavelength study of the reaction of phenolphthalein with sodium hydroxide
Authors: Tam KY 
Chau FT 
Issue Date: 1992
Publisher: Hindawi Publishing Corporation
Source: Journal of automatic chemistry, 1992, v. 14, no. 5, p. 157-162 How to cite?
Journal: Journal of automatic chemistry 
Abstract: A photodiode array (PDA) spectrophotometer was used to study the fading reaction of phenolpthalein in dilute sodium hydroxide solution. The principal component analysis (PCA) method was employed to identify the number of light absorbing species in the kinetics system. The target factor analysis (TFA) procedure, coupled with the Broyden-Fletcher-Goldfard-Shanno (BFGS) optimization method, was applied to the observed data to deduce the rate constants and the concentration-time profile of the reaction. The internal referencing method was shown to be essential in improving the quality of data obtained by a single beam PDA spectrophotomer.
ISSN: 2090-8865
EISSN: 2090-8873
DOI: 10.1155/S1463924692000294
Rights: Copyright © 1992 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.(From Hindawi Publishing Corporation
© 1992 Taylor & Francis Ltd (From Publisher pdf).
The following publication Tam, K. Y., & Chau, F. T. (1992). Simultaneous multiwavelength study of the reaction of phenolphthalein with sodium hydroxide. Journal of Automatic Chemistry, 14(5), 157-162 is available at
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