Influence of sample pretreatment on the extractability of polycyclic aromatic hydrocarbons (PAH) from forest floor horizons

authored by

Georg Guggenberger, Martin Pichler, Wolfgang Zech

Abstract

Extraction of PAH from Oh-horizon material after dispersion of air-dried samples in water resulted in a 80% higher yield of 20 PAH species compared to extraction of air-dried, freeze-dried or ground samples. Concurrently, the free surface area (BET method) of the organic matter increased. It was assumed that dispersion resulted in a disaggregation and/or stretching of organic aggregates, which makes interior aggregate regions available to the extractant that were previously not accessible for the extradant due to diffusion barriers.

External Organisation(s)

University of Bayreuth

Type

Article

Journal

Zeitschrift fur Pflanzenernahrung und Bodenkunde

Volume

159

Pages

405-407

No. of pages

3

ISSN

0044-3263

Publication date

08.1996

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Soil Science

Electronic version(s)

https://doi.org/10.1002/jpln.1996.3581590415 (Access: Closed)