NDLI: Preliminary studies of a fast screening method for polycyclic aromatic hydrocarbons in soil by using solvent microextraction-gas chromatography

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Hongyan Andrews, Anthony R. J.
Copyright Year	2000
Abstract	Solvent microextraction (SME) was applied to the extraction of polycyclic aromatic hydrocarbons (PAHs) from spiked and real environmental soil samples with different matrices. Soil sample was mixed with 7 mL of acetone and 14 mL of water to allow partitioning of the PAHs from the soil to the liquid phase. A 2 µL octane drop suspended from a microsyringe needle tip was then immersed into the stirred solution–soil mixture for extraction. After an 11 min extraction, the octane drop was withdrawn into the syringe and injected directly into the GC for identification and quantification. The whole analysis procedure took 27 min, with an extraction time of 11 min, and a GC separation time of 16 min. A second extraction could be undertaken whilst the GC is running, hence the GC run time currently limits the sample throughput. In this method, a small amount of organic solvent was used for the extraction process, which produced little waste. The limits of detection for lower molecular weight (<230) PAHs range from 0.13 to 0.36 mg kg−1, and for higher molecular weight (>250) PAHs are estimated to be between 0.5 and 1.0 mg kg−1, with RSD values generally under 20%. Due to the small volumes of organic solvent used, the consumable cost per extraction is only US$ 0.12. This is the first report of the application of SME to solid samples, and the first report of the use of SME for the analysis of PAHs.
Starting Page	656
Ending Page	661
Page Count	6
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	2
Issue Number	6
Journal	Journal of Environmental Monitoring
DOI	10.1039/b006731h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Polycyclic aromatic hydrocarbon Acetone Octane Solvent United States dollar
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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