Abstract
Based on a kinetic aspect of the extraction of copper(II) with dithizone, a method for the simultaneous determination of copper(II) Complexing capacity of natural water and lability of soluble copper(II) complex was developed. The feasibility of the proposed method was confirmed using some chelating agents such as nitrilotriacetic acid, ethylenediaminetetraacetic acid and citrate instead of naturally occurring ligands. The proposed method was applied to river water samples. The copper(II) complexing capacity of the water sample from urban area was larger than that from up-stream, due to a ligand which originated from human activity.
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