Dg. Woodfine et al., Simulating the response of metal contaminated lakes to reductions in atmospheric loading using a modified QWASI model, CHEMOSPHERE, 41(9), 2000, pp. 1377-1388
The changes in metal concentration following significant reductions in atmo
spheric metal loading of two nickel and copper contaminated lakes in Conist
on Valley of the Sudbury Basin of Ontario, Canada were simulated by using s
teady-state and dynamic versions of a modified Quantitative Water Air Sedim
ent Interaction (QWASI) Model. Metal partitioning and precipitation process
es were quantified with the aid of US EPA's MINTEQA2 Model. The dynamic mod
el successfully described the recovery of the two lakes and identified key
input, loss and partitioning processes. A useful modelling strategy is to d
evelop one or more steady-state models that give an approximate representat
ion of conditions at defined times, then extend this to a dynamic version w
hich can take into account the differing rates of response of components of
the system. This modelling strategy can be used for designing and assessin
g remediation programs for metal contaminated lakes and watersheds. (C) 200
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