Efficiency of Soxhlet and Ultrasonic Extractions for Determination of Polycyclic Aromatic Hydrocarbons in Wheat Sample Preparation

Biljana Škrbić, Nataša Djurišić-Mladenović, Jelena Cvejanov, and Ivana Kovljen

Faculty of Technology, University of Novi Sad, Novi Sad, Serbia

Corresponding author: Biljana Škrbić
    Faculty of Technology
    University of Novi Sad
    Bulevar cara Lazara 1
    21000 Novi Sad, Serbia
    Telephone: +381/21/450288 or 450289
    Fax number: +381/21/450413
    E-mail: biljana@tehnol.ns.ac.yu

CEJOEM 2004, Vol.10. No.1.: 68–73

Key words:
Persistent organic pollutants, solid sample, solvent extraction techniques

Abstract:
Extraction of persistent organic pollutants (POPs) from the sample matrix is a crucial step in the preparation of sample for the determination of pollutant level. Solvent extraction of solid sample is one of the oldest ways to pretreat solids, especially in order to extract hydrophobic compounds such as POPs. A review of various techniques for extraction of POPs from solid matrices is presented. Efficiencies of two conventional solvent extraction techniques, Soxhlet (SE) and ultrasound or ultrasonic extraction (USE), were studied and compared having in view their applicability to the determination of polycyclic aromatic hydrocarbons (PAHs) in fine-ground wheat samples. USE was shown to be more efficient than SE.

Received: 27 August 2003
Accepted: 2 October 2003

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