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Window factor analysis of methylene blue in water

โœ Scribed by Zhouming Zhao; Edmund R. Malinowski

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
131 KB
Volume
13
Category
Article
ISSN
0886-9383

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โœฆ Synopsis

The aggregation of methylene blue (MB) in water was studied by factor analysis (FA) of the visible spectra over a wide range of concentration from 1โ‹…000 ร‚ 10 77 to 1โ‹…600 ร‚ 10 72 M. Abstract factor analysis of data with multiple sources of error (AFA-MSE) revealed three MB species. The concentration profiles and spectra of the species were extracted by window factor analysis (WFA). The profiles were interpreted to be due to MB monomer, dimer and a trimer containing one chlorine atom. The dissociation constants of the dimer and trimer were determined to be 1โ‹…5 ร‚ 10 74 M and 3โ‹…2 ร‚ 10 711 M 3 respectively.

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