Comparisons and Temporal Trends of Organochlorines and Heavy Metals in Fish from the Gulf of Bothnia

摘要

During recent years, many factories in the Baltic Sea catchment have reduced their waste loading. However, because the Baltic Sea is shallow and drains large areas, deposition from airborne transport is important in defining the pollutant load to the Baltic Sea. According to Wulff and Rahm (1993), about one half of the extractable chlorinated organic matter load in the Baltic Sea enters via atmospheric deposition. One consequence of this is the high toxaphene concentration observed in salmon (Salmo salar, Vuorinen et al., 1993) and sea trout (S. trutta trutta, Vuorinen et al., 1994), although this compound is not used in the countries surrounding the Baltic.