Simultaneous Fluorometric Determination of Polycyclic Aromatic Hydrocarbons by Multivariate Regression Analysis

Shigeroku YAMAGUCHI*1,Tetsu KUMAGAI*2 and Hiroshi NISHIOKA*2

*1 Himeji College of Hyogo, Shinzaike-honmachi, Himeji, 670 JAPAN

*2 Himeji Institute of Technology, Shosha, Himeji, 671-22 JAPAN

(Recieved : September 29, 1995 ; Accepted for publication :August 31, 1996)

A method for the simultaneous determination of polycyclic aromatic hydro-carbons (PAHs) was developed by means of fluorometric analysis combined with partial least squares regression (PLS) analysis. Fluorescence spectra (Ex=305nm, Em=330-520nm) of twenty one synthetic solutions, which contain five sorts of PAH (10-2-10-1micro g cm-3) in n-hexane, were converted into ASKII data set. These were imported into a microcomputer and modified to make a regression model by employing PLS software. Newly prepared mixtures of all five PAHs (Benzo[a]pyrene, Perylene, Fluoranthene,Pyrene and Chrysene) were analyzed simultaneously using this model. The results predicted were in good agreement with the real data.

Key Words: Polycyclic Aromatic Hydrocarbon, Simultaneous Determination, Multivariate Regression Analysis, Fluorometry

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