Development of new methodology for the determination of polycyclic aromatic hydrocarbons in kerosene and biokerosene soot

Aurea Andrade-Eiroa (1) , Valérie Leroy (1) , Philippe Dagaut (1) , Yuri Bedjanian (1)

1 ICARE - Institut de Combustion, Aérothermique, Réactivité et Environnement

Here we report a new, efficient and reliable analytical methodology for sensitive and selective quantification of Polycyclic Aromatic Hydrocarbons (PAHs) in soot samples. The methodology developed is based on ultrasonic extraction of the soot-bound PAHs into small volumes of acetonitrile, purification of the extracts through C18 Solid Phase Extraction (SPE) cartridges and analysis by Reverse Phase Liquid Chromatography (RPLC) with UV and fluorimetric detection. For the first time, we report the convenience of adapting the SPE procedure to the nature of the soot samples. As a matter of fact, extracts containing high percentage of unpolar material are recommended to be cleaned with acetone, whereas extracts poor in unpolar compounds can be efficiently cleaned with methanol. The method was satisfactorily applied to kerosene and bio-kerosene soot from atmospheric open diffusion flames (pool fires) and premixed flames achieving Quantification and Detection limits in the range ng mg1 soot and recoveries about 90% for most of the PAHs studied.

Mots clés: Reverse Phase Liquid Chromatography (RPLC); Reverse Phase Liquid Chromatography (RPLC); Solid; Phase Extraction (SPE); Polycyclic Aromatic Hydrocarbons (PAHs); kerosene soot; ultrasonication; Reverse Phase Liquid Chromatography (RPLC).

Domaines: Ingénierie de l'environnement

Aurea Andrade-Eiroa, Valérie Leroy, Philippe Dagaut, Yuri Bedjanian. Development of new methodology for the determination of polycyclic aromatic hydrocarbons in kerosene and biokerosene soot. Chemosphere, 2010, 78, pp.1342-1349. ⟨10.1016/j.chemosphere.2010.01.005⟩. ⟨hal-00547595⟩