Abstract
Analytical conditions for synchronous fluorescence spectrometry were optimized for the simultaneous determination of fluorene, carbazole and anthracene in polycyclic aromatic matrices. The precision of t he determination is improved by setting the wavelength interval (Δλ) accurately and by mi nimizing the ratio of a variation of the intensity to the deviation of Δλ. In the simultaneous determinati on by synchronous fluorescence spectrometry, the most suitable Δλ for one compound is not always applicable to other compounds. The determination, therefore, was carried out by using the most suitable Δλ for eac h compound. Fluorene, carbazole and anthracene were determined within 1.0% of RSD by measuring the synchronous fluorescence intensities at 301 nm (Δλ=13 nm), 318 or 331 nm (Δλ= 17 or 19 nm), and 357 or 376 nm (Δλ= 21 or 24 nm), respectively. The sensitivity of this method is comparable to tha t of the conventional fluorescence spectrometry, because Δλ can be adjusted to 13-24 nm. This method has been successfully applied to the determination of these compounds in anthracene cake.
