ANALYSIS FOR EOX AND AOX IN 2 INDUSTRY INFLUENCED COASTAL AREAS IN THE GULF OF FINLAND - LEVELS OF EOX AND AOX IN THE KOTKA REGION, FINLAND- LEVELS OF EOX IN THE NEVA BAY, RUSSIA

Surficial sediment samples from nine stations in the Kotka area, Finla nd, and from ten stations in the Neva Bay, near the city of St. Peters burg, Russia, were analysed for EOX and AOX. In this study levels of t otal EOX (1.4-60 mug/g dw) and AOX (120-620 mug/g dw) in the Kotka are a and EOX (0.1-1.7 mug/g dw) in the Neva Bay were determined Three ope n sea stations in the Gulf of Finland (1.7-3.9 mug/g dw) were analysed for EOX. SEC-HPLC fractioned EOX concentrations of seven selected sta tions were also determined. The results show the total MW and EOX-MW d istributions are similar in all samples tested. The high levels of AOX and EOX clearly indicated pulp industry derived organochlorine contam ination in the Kotka area. EOX concentrations in the Neva Bay are at b ackground level, which indicated a low organochlorine load or no accum ulation in the sediments in that particular area.