Extraction Techniques for Polycyclic Aromatic Hydrocarbons in Soils
Author(s) -
Ee Von Lau,
Suyin Gan,
Hoon Kiat Ng
Publication year - 2010
Publication title -
international journal of analytical chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.352
H-Index - 16
eISSN - 1687-8779
pISSN - 1687-8760
DOI - 10.1155/2010/398381
Subject(s) - extraction (chemistry) , thermal desorption , soil water , accelerated solvent extraction , supercritical fluid extraction , desorption , solvent , environmental chemistry , chromatography , chemistry , moisture , environmental science , soil science , adsorption , organic chemistry
This paper aims to provide a review of the analytical extraction techniques for polycyclic aromatic hydrocarbons (PAHs) in soils. The extraction technologies described here include Soxhlet extraction, ultrasonic and mechanical agitation, accelerated solvent extraction, supercritical and subcritical fluid extraction, microwave-assisted extraction, solid phase extraction and microextraction, thermal desorption and flash pyrolysis, as well as fluidised-bed extraction. The influencing factors in the extraction of PAHs from soil such as temperature, type of solvent, soil moisture, and other soil characteristics are also discussed. The paper concludes with a review of the models used to describe the kinetics of PAH desorption from soils during solvent extraction.
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