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This study presents the results on heavy metal (Mn, Fe, Cu, Zn) analyses of sediments taken from Euvoikos Gulf, Greece, which is a semi-enclosed system receiving pollution loads from several urban and industrial sources and is affected by a strong tidal current. A sequential extraction schema and two single-step methods were used for the determination of trace metals. The data of the 1997 period are compared with data from previous studies carried out in the authors' laboratory in the area (1980, 1993) using various analytical techniques, in an attempt to evaluate both the evolution of pollution in the area and the effectiveness of analytical methods. It has been confirmed that a significant part of the pollution load remains in coastal localities in the vicinity of the land based pollution sources, whereas there are also some more remote sites where small polluted particles are transported, deposited and accumulated …