Abstract
The co-crystallization of ultramicro quantities of various elements with α-nitroso-β-naphthol was investigated. Radiotracer techniques were employed to measure the quantitative removal of these elements from aqueous solutions. Conditions were developed for the separation of cerium(III), zinc, iron(III), cobalt(II), zirconium and uranium(VI) by this process. Plutonium(IV) and ruthenium(III) co-crystallized less completely while sodium, strontium and antimony(III) remained largely associated with the mother liquor. The process was applied in the determination of uranium in seawater. The measured amount was 3.1 ± 0.1 μg uranium/l.
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