Sandimirov S. Screening studies of POP levels in fish from selected lakes in the Paz watercourse / In State of the environment in the Norwegian, Finnish and Russian border area. The Finnish Environment. Finland, Jyvaskyla: Kopijyva Oy. 2007, №6.

Screening studies o f POPs in fish from the Paz watercourse Table of Content 1. Introduction........................................................................................................................................ 4 2 Study area and sampling locations...............................................................................................5 3 Sampling procedure............................................................................................................................ 6 4 Analyses...............................................................................................................................................7 4.1. Analysed material.......................................................................................................................7 4.2. Contaminant analyses................................................................................................................ 8 4.3. Biochemical biomarker analyses..............................................................................................9 5 Results and discussion........................................................................................................................9 5.1 Legacy POP leve ls......................................................................................................................9 5.1.1. Organochlorines................................................................................................................. 9 5.1.2. Polychlorinated biphenyl (PCBs) leve ls.......................................................................14 5.2 New environmental contaminants.......................................................................................... 15 5.3. Polycyclic aromatic hydrocarbon (PAHs) levels............................................................ 20 6 Effect of contaminants: Biomarker studies...................................................................................22 6.1. Cytochrome P-450 hydroxylase activity.............................................................................. 22 6.2. Bile acids in fish b ile ............................................................................................................... 24 7 Conclusions/recommendations........................................................................................................27 8 Acknowledgements.......................................................................................................................... 27 9 References......................................................................................................................................... 28 Appendix 1 ........................................................................................................................................... 32 Appendix 2 ........................................................................................................................................... 53 Appendix 3............................................................................................................................................ 55 Akvaplan-niva report APN 514-3365.02 3