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Abstract
A high-performance liquid chromatography (HPLC) method was developed for the quantification of the polynuclear aromatic hydrocarbons (PAHs) chrysene, benzo[b]fluoranthene (B[b]F), benzo[a]pyrene (B[a]P) and benzo[ghi]perylene (B[ghi]P) in the particulate matter of indoor air samples. Samples were collected on 1 μm pore size Fluoropore membrane filters and extracted with acetonitrile (ACN). the PAHs were analyzed on a polymeric octadecylsilane, silica-based column (Vydac 201TP54) with fluorescence detection at selected excitation and emission wavelengths specific to the compounds of interest. A mobile phase gradient of water and ACN was used. the method is reproducible with percent relative standard deviations (%RSD) ranging from 5.0 to 9.6 for the five PAHs. Percent recoveries were ca. 100%. Analyses of various samples show that amounts of these five PAHs vary widely in air. A relatively short sampling time (five hours) is required and the procedure is capable of detecting <1 ng m3