| Popis: |
The effect of various concentrations of fulvic acid and Ca(OH)2 on the chemical speciation of soluble metals in five Quebec Lakes was examined by the computer program “Geochem”;. The computation showed that after the addition of the fulvic acid Ca, Mg, Na, K, Fe and Al were involved principally with the inorganic part, while Cu, Mn and Ni were associated with the organic part of the system in the water. No changes were observed in the chemical speciation of Ca, Mg, K, Na, Fe and Al after the addition of Ca(OH)2. However, up to 91% of Cu and 15% of Ni were complexed by OH. |
