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Interlaboratory studies of the determination of selected chlorobiphenyl congeners with capillary gas chromatography using splitless- and on-column injection techniques

✍ Scribed by Tuinstra, L. G. M. Th. ;Roos, A. H. ;Griepink, B. ;Wells, D. E.

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 580 KB
Volume: 8
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240080824

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✦ Synopsis

The Community Bureau of Reference has organized a collaborative interlaboratory project to improve the analytical protocol for some specific chlorobiphenyls (CBs) within the European Community (EC). A series of test procedures were prescribed to optimize the gas chromatographic conditions for splitless and on-column injection, which substantially improved the quality of data. Important parameters included the initial column and injector temperatures and the choice of the polarity of the stationary phase. In a study with cleaned eel-fat extracts, coefficients of variation for reproducibility CV(R) ranging from 11 to 24% at the 0.04-0.3 mg/kg level per CB congener were obtained. No significant difference could be found between splitless-and on-column injection.

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