Thermal Decomposition of Toxaphene Congeners by High Resolution Gas Chromatographic Phases

✍ Scribed by Baycan-Keller, Ruth ;Oehme, Michael

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 58 KB
• Volume: 21
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/(sici)1521-4168(19980501)21:5<298::aid-jhrc298>3.0.co;2-s

✦ Synopsis

Some toxaphene congeners are thermally unstable under commonly used gas chromatographic temperature conditions. The thermal stability of the 22 commercially available congeners has been studied at four different heating rates on four stationary phases Ultra 2 (5%-diphenyl-95%-dimethylpolysiloxane), a liquid crystalline phase (N,N 9bis(p-butoxy-benzylidene)-a,a 9-bis-p-toluidine), Rtx-2330 (90%-biscyanopropyl-10%-phenylcyanopropyl-polysiloxane), and heptakis-(2,3,6-O-t-butyldimethylsilyl)-b-cyclodextrin (TBDMS-CD) diluted in OV-1701-OH. A substantial degradation of the congeners Parlar 39, 42, 50, 56, 58, and 62 could be observed on the cyanopropyl polysiloxane stationary phase. Furthermore, the applied temperature program and stationary phase had an influence on the signal areas. These factors are important for a quantitative analysis.