Analysis of polycyclic aromatic hydrocarbons in soil and sediment with on-line coupled pressurised hot water extraction, hollow fibre microporous membrane liquid-liquid extraction and gas chromatography.
Pressurised hot water extraction (PHWE) was coupled on-line via hollow fibre microporous membrane liquid-liquid extraction (HF-MMLLE) to gas chromatography (GC) and applied in the analysis of polycyclic aromatic hydrocarbons (PAHs) in soil and sediment. In this combination, the MMLLE unit serves as a trapping device for the extracted compounds. Simultaneously it cleans and concentrates the extract, which is then transferred on-line to the GC. No extra clean-up steps are required between the trapping and the transfer to GC. The on-line system gives excellent sensitivity while allowing small sample size. The method was linear, with limits of detection in the range 50-890 pg and limits of quantification 0.11-1.22 microg g(-1). The concentration enrichment factors obtained with the method ranged from 9 to 55. Comparison of the results with those obtained by other techniques confirmed the good performance.
Kuosmanen
Kati
K
Laboratory of Analytical Chemistry, Department of Chemistry, P.O. Box 55, FIN-00014 University of Helsinki, Finland.
Hyötyläinen
Tuulia
T
Hartonen
Kari
K
Riekkola
Marja-Liisa
ML
D001322:Autoanalysis; D002849:Chromatography, Gas / Q000379:methods; D019015:Geologic Sediments; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants