Abstract
The use of p-nonylphenol as a coordinative and reductive extraction solvent was investigated. p-Nonylphenol floats on the surface of an aqueous solution as a semi-spherical droplet, and is useful for the extractive enrichment of metal ions. Cationic iron (II), cadmium (II) and copper(I) complexes with 1, 10-phenanthroline type ligands were quantitatively extracted into the p-nonylphenol phase without the presence of bulky counter anions, such as the perchlorate ion. Moreover, no reducing agent is necessary for the reductive extraction of iron(II)-1, 10-phenanthroline and copper(I)-neocuproin complexes from iron(III) and copper(II) solutions, respectively.
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