On-line solid phase extraction for polycyclic aromatic hydrocarbons in soil column effluents
- Technische Universitaet Muenchen, Freising-Weihenstephan (Germany). Lehrstuhl fuer Bodenkunde
- Univ. of Bayreuth (Germany). Soil Physics Div.
On-line solid phase extraction with C-18 cartridges provided a reliable method for the extraction of polycyclic aromatic hydrocarbons (PAHs) from soil column effluents. The on-line extraction was compared to the common off-line extraction of effluent fractions with respect to the mass recoveries of an internal standard. The effluent was obtained from a water unsaturated soil column under steady state water flow conditions. The column was packed with an artificially anthracene-contaminated soil material. The results showed superior and more reproducible PAH trapping when the on-line extraction was used. The PAH mass recoveries were unaffected by the range of dissolved organic carbon (DOC) concentrations covered in the experiment. This held true over a range of pHs and water unsaturated conditions of the C-18 material. By using the on-line extraction procedure, losses of PAHs due to sorption to the surfaces of collection vessels were avoided. The combination with a fraction collector allowed for the extraction of very small sample volumes. Thus, the method is suitable for an unbiased evaluation of PAH mobility in soil column experiments.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 678082
- Journal Information:
- Journal of Environmental Quality, Journal Name: Journal of Environmental Quality Journal Issue: 2 Vol. 28; ISSN JEVQAA; ISSN 0047-2425
- Country of Publication:
- United States
- Language:
- English
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