CONGENER-SPECIFIC SEPARATION OF COMPOUNDS OF TECHNICAL TOXAPHENE ON ANONPOLAR CP-SIL-2 PHASE

Commercially available and persistent compounds of technical toxaphene (CTTs) were analyzed on a very nonpolar CP-SII 2 capillary column. Th e bornane skeleton was divided into three parts: the six-membered ring (C1 - C6), the substituents at the bridge (C8 and C9), and the substi tuents at the bridge head (C10). With two parts fixed, the influence o f the third substructure on the relative retention indices (RRI) was i nvestigated. Several substructures leading to low or high RRI values w ere observed. Furthermore, structural elements leading to low gas chro matographic or electron capture negative ionization response factors a nd influences of structure of CTTs on persistence in biota were recogn ized. Finally, first indications of the structure of unknown persisten t CTTs are presented. (C) 1997 John Wiley & Sons, Inc.