Comparison of supercritical CHCIF(2), N(2)O, and CO(2) for the extraction of polychlorinated biphenyls and polycyclic aromatic hydrocarbons

Supercritical fluid extraction (SFE) recoveries for native pollutants including PCBs from a standard reference material sediment, polycyclic aromatic hydrocarbons (PAHs) from a petroleum waste sludge and PAHs from railroad bed soil were compared using supercritical Freon-22, nitrous oxide and carbon...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1992-07, Vol.64 (14), p.1614
Main Authors: Hawthorne, Steven B, Langenfeld, John J, Miller, David J, Burford, Mark D
Format: Article
Language:English
Subjects:
Chemistry
Hydrocarbons
Waste materials
Online Access:Get full text
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Summary:Supercritical fluid extraction (SFE) recoveries for native pollutants including PCBs from a standard reference material sediment, polycyclic aromatic hydrocarbons (PAHs) from a petroleum waste sludge and PAHs from railroad bed soil were compared using supercritical Freon-22, nitrous oxide and carbon dioxide. Results indicate that the ability of a supercritical extraction fluid to interact with sorptive sites on sample matrices may ultimately control SFE rates and recoveries from environmental solids.
ISSN:0003-2700
1520-6882