5 
Table of Content 
1 Abbreviations and explanations 9 
2 Executive summary 15 
2.1 Part Polychlorinated paraffins and chlordanes 15 
2.1.1 Characterisation of polychlorinated paraffins (PCAs) 15 
2.1.2 Characterisation of chlordanes 16 
2.1.3 Analytical problems of PCAs 17 
2.1.4 Method development for PCA analysis 18 
2.1.5 Quantification of chlordanes 19 
2.1.6 PCAs in biota from the Baltic/North Sea and the northern North Atlantic 20 
2.1.7 PCAs in sediments from the Baltic and North Sea and additional sites in Europe 21 
2.1.8 PCA in sea water 23 
2.1.9 Chlordanes in biota from the Baltic and North Seas and the northern North Atlantic 23 
2.1.10 Clordanes in sediments from the Baltic and North Seas and additional sites in Europe 24 
2.2 Part: Sampling and analysis - selected pesticides 25 
2.2.1 Characterisation of the target compounds 25 
2.2.2 Chlorpyrifos 25 
2.2.3 Dicofol 25 
2.2.4 Endosulfan 26 
2.2.5 Pentachlorophenol (PCP) 26 
2.2.6 Trifluralin 26 
2.2.7 Analytical problems and method development 27 
2.2.8 Chlorpyrifos in the marine environment of the North and Baltic Seas 27 
2.2.9 Endosulfan in the marine environment of the North and Baltic Seas 28 
2.2.10 Dicofol in the marine environment of the North and Baltic Seas 29 
2.2.11 Pentachlorophenol in the marine environment of the North and Baltic Seas 30 
2.2.12 Trifluralin in the marine environment of the North and Baltic Seas 31 
2.2.13 Recommendations for future monitoring activities 32 
3 Introduction 35 
4 Sampling procedure and sampling sites 39 
4.1 Water and sediment sampling 39 
4.2 Sampling of biota 44 
5 Project 1: Identification of Chlorinated Paraffins and Chlordanes in the North and 
Baltic Seas 51 
5.1 Aim of the project 51 
5.2 Survey about properties of PCAs and chlordane 53 
5.2.1 Polychlorinated »-alkanes (PCAs) 53 
5.2.2 Chlordane 56