Comparative study of extraction methods for the determination of PAHs from contaminated soils and sediments

摘要

The following four methods were compared on the extraction efficiency of 16 EPA(US Environmental Protection Agency) polycyclic aromatic hydrocarbons(PAHs): German method of he Verband Deutscher Landwirtschaftlicher Untersuchungs und Forschungsanstalten (VDLUFA), two methods of the International Organization for Standard- Ization using shaking (ISO A) and Soxhlet Extraction(ISO B) and an ultrasonic method, Recovery rates of 16 PAHs Were determined in two soils. Extraction efficiency was evaluated in five soils and three sediments. Effect of drying soils And sediments on extraction efficiency was tested using the VDLUFA and the ultrasonic methods.