Skip to Main content Skip to Navigation
Journal articles

Fast method to quantify PAHs in contaminated soils by direct thermodesorption using analytical pyrolysis

Abstract : A method for polycyclic aromatic hydrocarbon (PAH) quantification, based on pyrolysis at 450 °C combined with gas chromatography coupled with mass spectrometry and flame ionization detection (Py-GC-MS/FID), was developed and compared to a conventional PAH quantification method using accelerated solvent extraction and GC–MS analyses. The PAH contents of three coking plant soils, one gas plant soil, two wood-treating facility soils and one certified reference material (CRM-BCR 524) were determined using both methods. The results obtained with both methods showed a good match, especially in the case of the CRM. The other soil samples presented higher variability which was greatly reduced by crushing the samples to lower particle size (from < 500 to < 100 μm). Higher contents of low molecular weight (LMW) PAHs were quantified with the Py-GC-MS/ FID than with the conventional method, probably because of a slight cracking phenomenon occurring during the pyrolysis and/or a loss of the LMW compounds during the sample concentration required for the conventional method. Because of the limited sample preparation and the fact that no solvent was used, the pyrolysis-based method was proven to be a faster, less expensive and more environmentally friendly than the classical methods for PAH quantification in contaminated soils.
Complete list of metadata

Cited literature [39 references]  Display  Hide  Download
Contributor : Coralie Biache Connect in order to contact the contributor
Submitted on : Tuesday, January 30, 2018 - 11:51:43 AM
Last modification on : Wednesday, November 3, 2021 - 6:35:54 AM
Long-term archiving on: : Friday, May 25, 2018 - 5:20:35 PM


Biache et al, 2017b_postprintH...
Files produced by the author(s)



C. Biache, C. Lorgeoux, Alain Saada, Stéfan Colombano, P. Faure. Fast method to quantify PAHs in contaminated soils by direct thermodesorption using analytical pyrolysis. Talanta, Elsevier, 2017, 166, pp.241 - 248. ⟨10.1016/j.talanta.2017.01.055⟩. ⟨hal-01696302⟩



Record views


Files downloads