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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 5
BKCSDE 27(5)
May 20, 2006 

 
Title
Analytical Head-space Supercritical Fluid Extraction Methodology for the Determination of Organochlorine Compounds in Aqueous Matrix
Author
Keon Sang Ryoo*, Seong-Oon Ko, Yong Pyo Hong, Jong-Ha Choi, Yonggyun Kim, Won Kyoung Lee
Keywords
Head-space SFE methodology, Organochlorine compounds, Conventional method, Static and dynamic mode
Abstract
The proposed head-space supercritical fluid extraction (SFE) methodology as an alternative to an existing conventional procedure was explored for the determination of organochlorine compounds in aqueous matrix. In this study, polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were utilized as target analytes. To enhance the recovery efficiency, the factors such as the CO2 density, the extraction time, and the extraction mode were investigated. Furthermore, the analytical procedures and the results obtained were compared with those provided by the conventional method (the U.S. EPA method 8080). Under the optimized conditions, i.e., a combination of static with dynamic SFE mode at 2,000 psi and 40 oC, the head-space SFE methodology gave equivalent or better to the conventional method in recovery efficiencies with clear advantages such as simple sample treatment and fast analysis time as well as reduced solvent and reagent consumption.
Page
649 - 656
Full Text
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