Artificial neural networks (ANNs) in the analysis of polycyclic aromatic hydrocarbons in water samples by synchronous fluorescence

Backpropagation artificial neural networks, principal component regression and partial least squares have been compared in order to establish the best multivariate calibration models for the analysis of mixtures of polycyclic aromatic hydrocarbons containing 10 of these compounds (anthracene, benz[a ]anthracene, benzo[a]pyrene, chrysene, fluoranthene, fluorene, naphthalene, perylene, phenanthrene and pyrene). The synchronous fluorescence spectra ( recorded at wavelength increments of 50 and 100 nm) of 85 standards, with c oncentrations ranging from 0 to 20 ng ml(-1), have been used for this purpo se. (C) 1999 Elsevier Science B.V. All rights reserved.