懸濁物質への重金属の吸着について

概要

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In estuary waters of Nagoya City, the Percentage of particulate species was above 50% for Pb, Cu, and Zn, and below 50% for Mn and Ni. To evaluate the behavior of heavy metals in estuary waters, the adsorption of heavy metals on suspended solids was examined. The extent that heavy metal ions are removed from aqueous solution by suspended solids has been shown to vary with the nature of suspended solids, solution pH, and the presence of competing rations. Distribution coefficients (K) of Pb, Cu, and Zn adsorbed on suspended solids were of the order of 102-104, those of Cd, Mn and Ni were below 103. As (V) was little adsorbed and its K value was below 10. In other words, the affinity order for suspended solids was found to be Pb(II) ?? Cu(II) ?? ;Zn(II)>Cd(II)>Ni(II) ?? ;Mn(II) ?? As(V).
公益社団法人日本水産学会の論文