MODELED AND OBSERVED FATE OF CHLOROCYMENES

Two steady state models, Canadian PPEFF and German WATER/CemoS, were u sed to evaluate the fate of five chlorocymenes and one chlorocymenene discharged in decreasing amounts into the River Kymijoki in southern F inland during 1990-1993. Concentrations estimated with the both models were comparable with each other: for water quite the same, for sedime nt and fish slightly higher with PPEFF; In the end of the study period observed contents in sediment and fish were significantly higher than the modeled ones. This result points out need for dynamic, unsteady s tate model to predict the future fate of pollutants when emissions cha nge in time. Copyright (C) 1996 Elsevier Science Ltd