Abstract
A routine method for the identification and quantification of mononitrated polycyclic aromatic hydrocarbons in environmental samples has been developed. Micro-scale liquid-liquid partition between dimethylformamide and cyclohexane and HPLC on normal-phase silica gel columns are used for clean-up of samples. This preconcentration scheme is time-saving and uses a minimal amount of solvents. Identification and quantification are performed by GC/ECD and GC/MS in the “selected ion monitoring” mode. The analytical scheme has been optimized under use of standard substances by variation of several parameters in different steps of the analysis. The method was applied to the NBS Reference Material SRM 1649 “Urban Dust”, to urban air samples from the city of Vienna as well as to combustion emissions.
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