Extraction of polychlorinated biphenyl with supercritical carbon dioxide, sulfur hexafluoride and subcritical water

In the extraction of spiked PCB from soil, three extracting fluids were investigated: supercritical carbon dioxide (CO2), supercritical sulfur hexafluoride (SF6) and subcritical water. Among the tested fluids SF6 appeared to be appropriate especially for the extraction of low polar PCB. CO2 and wate...

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Veröffentlicht in:	Fresenius' journal of analytical chemistry 2000-05, Vol.367 (1), p.89-90
Hauptverfasser:	PROSS, S, GAU, W, WENCLAWIAK, B. W
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis methods Applied sciences Carbon Dioxide - chemistry Carbon Dioxide - metabolism Exact sciences and technology Pollution Polychlorinated Biphenyls - isolation & purification Quartz Silicon Dioxide - chemistry Soil and sediments pollution Soil Pollutants - isolation & purification Solvents - chemistry Solvents - metabolism Sulfur Hexafluoride - chemistry Sulfur Hexafluoride - metabolism Temperature Water - chemistry Water - metabolism
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Beschreibung
Zusammenfassung:	In the extraction of spiked PCB from soil, three extracting fluids were investigated: supercritical carbon dioxide (CO2), supercritical sulfur hexafluoride (SF6) and subcritical water. Among the tested fluids SF6 appeared to be appropriate especially for the extraction of low polar PCB. CO2 and water were found to be suitable for the quantitative extraction of all PCB. Water was judged as the best because of its low price, good availability and environmental safety.
ISSN:	0937-0633 1432-1130
DOI:	10.1007/s002160051605