HRGC-ECD and HRGC-ECNI-SIM-HRMS quantification of toxaphene residues by six environmentally relevant chlorobornanes as standard

The HRGC determination of toxaphene residues in environmental samples is often difficult because of different degradation rates and accumulation behavior of individual toxaphene components. Therefore, isolated environmentally relevant chlorinated bornanes are used as standards. During the last years, single components as well as different combinations of them have been tested for their suitability for HRGC-HRMS-ECNI quantification. In this study, Parlar #26, Parlar #40, Parlar #41, Parlar #44, Parlar #50, and Parlar #62 have been used. The results show the sum of these six components to be at least 80–85% of toxaphene in fish oils.