Synchronous determination of some polycyclic aromatic hydrocarbons(PAHs) in street soil samples by 2nd derivative spectrofluorimetry.

Many of PAHs with polycyclic structure shows superior sensitivity for the determination of each component in any mixture due to their fluorescence emission intensity. Synchronous 2nd derivative fluorimetric method was successfully applied for the determination of 7 PAHs in 15 street soil samples recommended by EPA(USA) free from intervention. The most effective measuring wavelength for the fluorescence of PAHs was individually selected by successive addition of Deltalambda(5 nm increment up to 200 nm) to the initial emission wavelength. The calibration graphs of the PAHs were linear at the concentration range of 0.4similar to100 ppb with the corelation efficient of 0.999. The analytical result of the PAHs content could be used the estimation of traffic effect on the contamination of soil.