Comparison of thin-film microextraction and stir bar sorptive extraction for the analysis of polycyclic aromatic hydrocarbons in aqueous samples with controlled agitation conditions

Journal of Chromatography. a
Zhipei QinJanusz Pawliszyn

Abstract

The characterization of a poly(dimethylsiloxane) (PDMS) thin film for active extraction of some polycyclic aromatic hydrocarbons was investigated in both a 1-L aqueous solution and a flow-through system. The thin film was attached to an electric bench-drill at a constant rotation speed for constant agitation and fast extraction. The performance of a PDMS-coated stir bar at a constant stirring speed was also investigated. The comparison showed that the extraction rate was much higher when using the thin film than the stir bar, and that the equilibration time was greatly shortened due to the larger surface area/volume ratio of the thin film. The extraction rate was roughly proportional to surface area of the extraction phase during the initial stage of the extraction process; the amount of analyte extracted was proportional to the ratio of the extraction phase between the thin film and the stir bar. Different agitation and stirring rates of the thin film and stir bar were applied for extraction, revealing that extraction efficiency can be improved by increasing rotation rate. The application of rotated thin film in the field proved it is a valid and easily operated method for the determination of polycyclic aromatic hydrocarbons ...Continue Reading

References

Nov 22, 1996·Journal of Chromatography. a·M BiziukM Wiergowski
Jan 28, 2006·Journal of Chromatography. a·Gangfeng OuyangJanusz Pawliszyn
Nov 9, 2006·Journal of Agricultural and Food Chemistry·Eduardo Carasek, Janusz Pawliszyn

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Citations

Oct 7, 2008·Analytical and Bioanalytical Chemistry·Sanja RisticevicJanusz Pawliszyn
Jan 9, 2010·Nature Protocols·Sanja RisticevicJanusz Pawliszyn
Oct 19, 2013·Analytical and Bioanalytical Chemistry·Man HeBin Hu
Mar 19, 2014·Analytical and Bioanalytical Chemistry·Lourdes JacheroPablo Richter
Jan 6, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Lijun YeYongjin Li
Mar 19, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·B K K K JinadasaSimone Morais
Mar 29, 2021·Talanta·Francisco Antonio Casado-CarmonaSoledad Cárdenas
Oct 1, 2013·Journal of Chromatography. a·Mohammad Saraji, Bahman Farajmand
Jan 29, 2011·Chemical Reviews·Gangfeng OuyangJanusz Pawliszyn
Dec 10, 2013·Analytical Chemistry·Ruifen Jiang, Janusz Pawliszyn
Oct 9, 2012·Analytical Chemistry·Farhad Riazi Kermani, Janusz Pawliszyn

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