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Window factor analysis: Theoretical derivation and application to flow injection analysis data
Author(s) -
Malinowski Edmund R.
Publication year - 1992
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.1180060104
Subject(s) - bismuth , chemistry , hydrochloric acid , perchlorate , flow (mathematics) , biological system , window (computing) , chromatography , analytical chemistry (journal) , mathematics , computer science , geometry , inorganic chemistry , ion , organic chemistry , biology , operating system
Window factor analysis (WFA) is a self‐modeling method for extracting the concentration profiles of individual components from evolutionary processes such as flow injection, chromatography, titrations and reaction kinetics. The method takes advantage of the fact that each component lies in a specific region along the evolutionary axis, called the window. Theoretical equations are derived. The method is used to extract the concentration profiles and spectra of seven bismuth species from data obtained by Gemperline and Hamilton, who injected bismuth perchlorate into a flowing stream of hydrochloric acid.