MICROWAVE-ASSISTED EXTRACTION OF POLYCHLORINATED BIPHENYLS AND POLYCHLORINATED DIBENZODIOXINS FROM FLY ASH

The effects of extraction parameters on the microwave-assisted extraction (MAE) of polychlorinated biphenyls (PCBs) and polychlorinated dibenzodioxins (PCDDs) from fly ash were compared. The effects of toluene-isopropyl alcohol (IPA) mixture compositions, solvent volume, temperature, extraction time...

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Bibliographic Details
Published in:Journal of liquid chromatography & related technologies 2002-05, Vol.25 (6), p.899-911
Main Authors: Yang, Jeong Soo, Lee, Dai Woon, Lee, Seungho
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Applied sciences
Atmospheric pollution
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Other chromatographic methods
Pollution
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Summary:The effects of extraction parameters on the microwave-assisted extraction (MAE) of polychlorinated biphenyls (PCBs) and polychlorinated dibenzodioxins (PCDDs) from fly ash were compared. The effects of toluene-isopropyl alcohol (IPA) mixture compositions, solvent volume, temperature, extraction time (rise and hold time), and microwave power on the variation of recoveries were studied. The MAE carried out at 100°C for 35.3 min using 5 mL of toluene-IPA (90 : 10, v/v) was more effective in isolating PCBs and PCDDs from fly ash. Multi-layer column chromatography on neutral and acidic silica gel with n-hexane was used for cleaning up the extracts. High performance liquid chromatography (HPLC) with ultraviolet (UV) detection was employed to identify and quantify the analytes.
ISSN:1082-6076
1520-572X
DOI:10.1081/JLC-120003268