CONTAMINATION OF PIKE AND SEDIMENT FROM THE KYMIJOKI RIVER BY PCDES, PCDDS, AND PCDFS - CONTENTS AND PATTERNS COMPARED TO PIKE AND SEDIMENTFROM THE BOTHNIAN BAY AND SEALS FROM LAKE SAIMAA

Sediment and pike from Kymijoki River and Bothnian Bay were analyzed f or contents of polychlorinated diphenyl ethers (PCDE), 2,3,7,8-substit uted polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) , and non-ortho-substituted polychlorinated biphenyls (coplanar PCBs). Both sites are located in the vicinity of pulp mills. The same compou nds were measured in a chlorophenol formulation Ky-5, which used to be used as a wood preservative, and in four ringed seals from Lake Saima a and in one seal from Lake Baikal. Results of this preliminary study indicated that spills from the manufacture of Ky-5 in the past have co ntaminated Kymijoki River sediments with PCDEs, PCDDs, and PCDFs. The same PCDE congeners that dominated in these sediments were abundant in Ky-5, pikes from Kymijoki River, and seals from Lake Saimaa. The TEQs of PCDD/PCDFs in the Kymijoki River sediments varied from 0.04 to 59 ng/g dry weight. The contents of PCDE, PCDD, and PCDF compounds were l ow in sediments and pikes from the Bothnian Bay.