DETERMINATION OF COPLANAR POLYCHLORINATED -BIPHENYLS IN MINERAL-OILS AND WASTE OILS

Citation
K. Schrickel et al., DETERMINATION OF COPLANAR POLYCHLORINATED -BIPHENYLS IN MINERAL-OILS AND WASTE OILS, Journal fur praktische Chemie, Chemiker-Zeitung, 339(5), 1997, pp. 456-460
Citations number
16
Categorie Soggetti
Chemistry,"Chemistry Applied
ISSN journal
09411216
Volume
339
Issue
5
Year of publication
1997
Pages
456 - 460
Database
ISI
SICI code
0941-1216(1997)339:5<456:DOCP-I>2.0.ZU;2-U
Abstract
Due to insufficient waste management polychlorinated biphenyls (PCB) a re often found in waste oils and in recycled mineral oil products. Bec ause of their structure coplanar PCBs are more toxic than other congen ers and insofar possibly comparable to polychlorinated dioxins and fur ans (PCDD/F). Known analytical methods for PCBs in mineral oils do not distinguish between the different toxic congeners. This paper describ es a method of selective measurement of eleven coplanar PCBs from mine ral oils. The complexity of the matrix and the very low concentration of the analytes require a laborious clean-up procedure: Solid phase ex traction (SPE) on silica impregnated with sulfuric acid, gel permeatio n chromatography, direct treatment with cone. sulfuric acid and chroma tography on alumina. After separation of the coplanar congeners from t he other PCBs by chromatography on activated charcoal and on basic alu mina they are determined by GC/high-resolution-MS.