you must extract PAH ( you have a lot of solutions) with ASE for exemple, concentrate, extrac with silca alumine and the inject on HPLC Fluo or GCMS....

What are the specifications of column that can be used in GC

Maybe our paper (enclosed) can be interesting for you.

I forgot the attachment:

Mr. Carlos Garcia-Delgado and Mr. Karl Cammann Thank you for your suggestions..

I would recommend to do the extraction before and after saponification of the humic matrix according to

Eschenbach A.,

Kästner M.,

Bierl R.,

Schaefer G.,

Mahro B.

(1994) Evaluation of a new and more effective method to extract polycyclic aromatic hydrocarbons from soil samples. Chemosphere 28:683–692.

This gives a more complete picture.

I would like to recommend some useful paper about this subject. These paper are highly cited paper.

http://www.sciencedirect.com/science/article/pii/S1352231001004253

http://link.springer.com/article/10.1007%2Fs00254-006-0593-6?LI=true