Computer-Assisted Quantitative and Qualitative Analyses of Complex Sample Using a Multi-Wavelength Detector

Abstract

A new computer-assisted analytical strategy has been proposed for both quantitative and qualitative analyses of complex mixture samples. This method is based on simultaneous peak detection at 6 different wavelengths using a photodiode-array multiwavelength detector. It was applied to the analysis of polycyclic aromatic hydrocarbons in petroleum pitch with reference to the NBS standard reference material (SRM-1647). Our new strategy has allowed a tentative identification of 14 compounds among 16 Priority Pollutants contained in pitch through a retention comparison. However, the identification of 4 components was cancelled due to a comparison with the UV spectrum. The method proposed here allows even an inexperienced operator to do analysis work on complex mixture samples with the aid of a computer.