Table of Contents 1 48

Sandimirov S. Screening studies of POP levels in bottom sediments 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.

Table of content	5
1 Introduction	7
2 Aim of the study	7
3 Quality Assurance Project Plan	7
4 Sampling program	8
4.1 Sampling procedure	9
5 Results and discussion	10
5.1. Analyses	10
5.2. Trace elements	11
5.3. Polycyclic aromatic hydrocarbons (PAHs)	12
5.4. Persistent Organic Pollutants (POPs)	16
5.4.1. Chlorinated pesticides	16
5.4.2. Polychlorinated biphenyls	18
5.4.3. Toxaphenes	22
5.4.4. Polybrominated diphenyl ethers (PBDEs)	22
5.4.5. Polychlorinated dibenzo-para-dioxins and polychlorinated dibenzofurans (PCDDs/PCDFs)	24
6. Toxicity of contaminant mixture	27
7. Conclusions/Recommendations	29
8. Acknowledgement	30
9. References	30
Appendix 1	33

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