Using Partial Least-Squares Regression in Multivariate UV Spectroscopic Analysis ofMixtures of Imidazolium-Based Ionic Liquids and 1-Methylimidazole for Measurements of Liquid-Liquid Equilibria

0385477 - ÚCHP 2013 RIV US eng J - Journal Article
Bendová, Magdalena - Sedláková, Zuzana - Andresová, Adéla - Wagner, Zdeněk
Using Partial Least-Squares Regression in Multivariate UV Spectroscopic Analysis ofMixtures of Imidazolium-Based Ionic Liquids and 1-Methylimidazole for Measurements of Liquid-Liquid Equilibria.
Journal of Solution Chemistry. Roč. 41, č. 12 (2012), s. 2164-2172. ISSN 0095-9782. E-ISSN 1572-8927
R&D Projects: GA ČR GP203/09/P141; GA AV ČR IAA400720710
Institutional support: RVO:67985858
Keywords : room-temperature ionic liquids * PLS2 * uv spectroscopy
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.128, year: 2012

In this work a calibration technique is used that makes use of the partial least-squares regression in UV spectroscopic determination of concentrations of 1-butyl-3-methylimidazolium hexafluorophosphate and 1-methylimidazole. Partial least-squares regression using PLS2 algorithm occurs to provide an effective solution to decomposing complicated spectra, coping with components interferences, nonlinearities and collinearity. The calibration method for the chosen compounds was validated using test samples of known composition and by measuring liquid-liquid equilibria at 298.15 K in the ternary system 1-butyl-3-methylimidazolium hexafluorophosphate + 1-methylimidazole + 1-chlorobutane.
Permanent Link: http://hdl.handle.net/11104/0216339