NUMERICAL-SIMULATION MODEL OF FATTY-ACIDS IN LAKE-SEDIMENTS

The finite element model was successfully applied to predict the Pb-21 0 and total extractable fatty acid concentrations at different depths in two sediment cores from Lake Ontario by using different transport p arameters. The transport parameters were computed from Pb-210 data. Th ese parameters were used to simulate the total extractable fatty acid concentrations at different depths. The computed results were compared with observed data and results were compared by statistical methods. Good agreement was achieved though improved results were observed in a two layer model accounting for bioturbation in the upper 4-6 cm of se diment. By modifying this model is useful to apply the contaminant tra nsport in lake sediments, industrial waste disposal ponds, and fish po nds with different geological, physical, chemical and biological param eters at different depths.