A novel application of nylon membranes for tributyltin determination in complex environmental samples by fluorescence spectroscopy and multivariate calibration

Manuel A. Bravo, Graciela M. Escandar, Alejandro C. Olivieri, Emmanuelle Bardin, Luis F. Aguilar, Waldo Quiroz

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

7 Citas (Scopus)

Resumen

The widely distributed pollutant tributyltin (TBT) was analyzed in different environmental samples (waters and sediments) combining preconcentration on a nylon membrane, excitation-emission fluorescence matrices directly measured over the membrane and second-order multivariate calibration. The latter was implemented using unfolded partial least-squares with residual bilinearization (U-PLS/RBL), a flexible algorithm achieving second-order advantage, even under severe spectral overlapping among sample components. Matrix-specific calibrations were required to overcome matrix effects, resulting in good analytical performance. TBT was determined in the concentration ranges 0.043-1.42ng Sn mL-1 in water and 24-400μg Sn kg-1 in sediments, with adequate detection limits in the range 0.03-0.15ng Sn mL-1.

Idioma originalInglés
Páginas (desde-hasta)77-84
Número de páginas8
PublicaciónChemometrics and Intelligent Laboratory Systems
Volumen148
DOI
EstadoPublicada - 15 nov. 2015
Publicado de forma externa

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