IQUIR   05412
INSTITUTO DE QUIMICA ROSARIO
Unidad Ejecutora - UE
artículos
Título:
Chemometric-assisted MIP-optosensing system for the simultaneous determination of monoamine naphthalenes in drinking waters
Autor/es:
- ANGEL VALERO-NAVARRO; PATRICIA C. DAMIANI; JORGE F. FERNÁNDEZ-SÁNCHEZ; ANTONIO SEGURA-CARRETERO; ALBERTO FERNÁNDEZ-GUTIÉRREZ
Revista:
TALANTA
Editorial:
Elsevier
Referencias:
Lugar: Amsterdan; Año: 2008
ISSN:
0039-9140
Resumen:
In the present work a chemometric-assisted molecularly imprinted polymer
(MIP)-fluorescence optosensing system has been developed for determining
monoamines naphthalene compounds in drinking waters. The use of chemometrics for
processing flow injection analysis with MIP fluorescence optosensor data allowed the
simultaneous determination of the principal monoamine naphthalene compounds 1-
Naphthylamine (1-NA) and 2-Naphthylamine (2-NA) even in presence of potential
interferent 1-Naphthalenemethylamine (1-NMA). Classical chemometrics tools such as
partial least-squares (PLS-1), as well as second order algorithms like multiway PLS (NPLS)
and unfolded PLS (U-PLS), were successfully applied, assisting fluorescence
emission spectra at a fixed excitation wavelength or excitation-emission fluorescence
matrices (EEM) respectively, when interferents are considered in the calibration set.
The combinations of both N-PLS and U-PLS with residual bilinearization (RBL),
achieving the second order advantage, were satisfactory applied for the simultaneous
determination of the main monoamine naphthalene compounds in drinking water, in the
presence of a potential interferent without sample pretreatment, even when the later is
not modeled in calibration set. Predictive ability, accuracy, figures of merit, as well as
advantages and disadvantages of the different strategies were discussed.