Boletín de la Sociedad Chilena de Química
versión impresa ISSN 0366-1644
AMADOR-HERNANDEZ, J. et al. DETERMINACION SIMULTANEA DE SEIS HIDROCARBUROS POLICICLICOS AROMATICOS EN MEDIO MICELAR POR REGRESION DE MINIMOS CUADRADOS PARCIALES (PLS-1) UTILIZANDO ESPECTROS DE FLUORESCENCIA DE ANGULO VARIABLE LINEAL. Bol. Soc. Chil. Quím. [online]. 1999, vol.44, n.3, pp. 299-313. ISSN 0366-1644. doi: 10.4067/S0366-16441999000300007.
The multivariate calibration method partial least squares regression type 1 (PLS-1) was applied to the simultaneous spectrofluorimetric determination of aromatic polycyclic hydrocarbons of environmental interest, namely benzo[ a] pyrene,benzo[ e] pyrene, benzo[ g,h,i] perylene, coronene, dibenzo[ a,h] antrhracene and indeno[ 1,2,3-c,d] pyrene in micellar medium by using the non ionic surfactantpolyethylene ether (POLE). In order to employ the highest sensitivity signals for the determination of each of the compounds in the mixture, the corresponding linear variable angle fluorescence spectra were recorded. Several data characteristic are taken into account in order to minimize the optimum number of factors required for the construction of calibration model while using various statisticial criteria of selection. The statistical parameters obtained by internal and external validation of the optimum calibration model were in agreement, with satisfactory results. The results obtainedin both synthetic mixtures and in water samples of two different origins spiked with known quantities of hydrocarbons of interest are satisfactory
Palabras clave : Fluorimetry; PAH's; multicomponent analysis; PLS.