The time-resolved laser-induced fluorescence of a series of polycyclic aromatic compounds (PAHs) and mixtures of these latter in aqueous solution was measured by means of an apparatus equipped with optical fibers, which allows their in situ monitoring. The potential of such spectroscopic technique, yielding 4-way fluorescence data arrays, together with the application of multi-way models to the matricized data, was tested for the resolution of complex aqueous mixtures containing low concentrations of PAHs, as typical fluorescent pollutants in aquatic systems. PARAllel FACtors analysis was employed for the qualitative resolution of PAHs mixtures and for calculating the fluorescence lifetimes of single PAHs; n-way partial least squares analysis was applied for evaluating the concentration of the single PAHs in the aqueous mixtures.

Application of Multi-way Models to the Time-resolved Fluorescence of Polycyclic Aromatic Hydrocarbons Mixtures in Water / E. Selli, C. Zaccaria, F. Sena, G. Tomasi, G. Bidoglio. - In: WATER RESEARCH. - ISSN 0043-1354. - 38:9(2004), pp. 2269-2276.

Application of Multi-way Models to the Time-resolved Fluorescence of Polycyclic Aromatic Hydrocarbons Mixtures in Water

E. Selli;C. Zaccaria;
2004

Abstract

The time-resolved laser-induced fluorescence of a series of polycyclic aromatic compounds (PAHs) and mixtures of these latter in aqueous solution was measured by means of an apparatus equipped with optical fibers, which allows their in situ monitoring. The potential of such spectroscopic technique, yielding 4-way fluorescence data arrays, together with the application of multi-way models to the matricized data, was tested for the resolution of complex aqueous mixtures containing low concentrations of PAHs, as typical fluorescent pollutants in aquatic systems. PARAllel FACtors analysis was employed for the qualitative resolution of PAHs mixtures and for calculating the fluorescence lifetimes of single PAHs; n-way partial least squares analysis was applied for evaluating the concentration of the single PAHs in the aqueous mixtures.
Polycyclic aromatic hydrocarbons ; Time-resolved fluorescence ; Multi-way models ; PARAFAC ; nPLS
Settore CHIM/02 - Chimica Fisica
WATER RESEARCH
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/25582
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