Determination of polychlorinated biphenyls in transformer oils by capillary gas chromatography

A procedure for rellable routine analysis of polychlorinated biphenyl (PCB) mixtures in mineral oils was developed. An acetonitrile/hexane partition followed by passage in hexane through a prepacked cartridge of silica serves to remove bulk mineral oil and most interferences. Gas chromatography (GC)...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1982-03, Vol.54 (3), p.478-481
Main Authors: Gordon, Robert J, Szita, Joseph, Faeder, Edward J
Format: Article
Language:English
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Summary:A procedure for rellable routine analysis of polychlorinated biphenyl (PCB) mixtures in mineral oils was developed. An acetonitrile/hexane partition followed by passage in hexane through a prepacked cartridge of silica serves to remove bulk mineral oil and most interferences. Gas chromatography (GC) through a capillary silica column with electron capture detection allows PCB peaks to be distinguished from other chlorinated species (principally pesticides), and patterns for various Aroclors (standard PCB mixtures) are readily recognized. A rigorous glassware cleaning procedure is also required. Recoveries of PCBs from spiked oils were determined at five concentration levels. Several hundred samples have been analyzed.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac00240a028