Simple Synchronous Fluorimetric Method for Determination of Benzo[a] pyrene in Airborne Particulates without a Pre-Separation Procedure

摘要

A sensitive analytical method, constant-energy synchronous fluorimetry, has been used to determine benzo[a]pyrene (BaP) selectively in airborne particulates (AP). A constant-energy difference of 1 400 cm ' was selected for obtaining single spectral peak. The method could easily identify BaP in an 18-component polycylic aromatic hydrocarbons(PAHs) mixtures. Calibration plots in methanol solution and in sodium dodecylsulfate (SDS) micellar media show a good linearity (R>0.999) in the BaP concentrationrange generally found in the environment. The method gives a detection limit of 0.40 nmol/L in SDS micellar medium and 1.34 nmol/L in methanol solution.