Analytical applications of mixed ligand extraction equilibria Nickel-ditbizone-phenanthroline complex.
The mixed ligand nickel-dithizone-phenanthroline complex provides a sensitive method for determination of nickel and also permits evaluation of the extraction constant for nickel dithizonate. The value log K(ex) = -0.7 was obtained, in agreement with a value of -0.2 obtained by others, and in contrast to an earlier value of -2.9. The addition of phenanthroline substantially increases the rate of extraction.
Freiser
B S
BS
Department of Chemistry University of Arizona Tucson, Arizona 85721, U.S.A.
Freiser
H
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